10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

 ___________________________________________________

FORM 10-Q

 ___________________________________________________

(Mark One)

S QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the Quarterly Period Ended December 29, 2012

or

£ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from          to         

Commission File Number: 001-33962

COHERENT, INC.

Delaware	94-1622541
(State or other jurisdiction of	(I.R.S. Employer
incorporation or organization)	Identification No.)

5100 Patrick Henry Drive, Santa Clara, California 95054

(Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code: (408) 764-4000

___________________________________________________

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports) and (2) has been subject to such filing requirements for the past 90 days. Yes SNo £

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes S No £

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one): 

Large accelerated filer S	Accelerated filer £
Non-accelerated filer £	Smaller reporting company £
(do not check if a smaller reporting company)

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes £  No S

The number of shares outstanding of registrant’s common stock, par value $.01 per share, on February 4, 2013 was 24,222,144.

COHERENT, INC.

INDEX

		Page
Part I.	Financial Information
Item 1.	Financial Statements (unaudited)
	Condensed Consolidated Statements of Operations
	Three months ended December 29, 2012 and December 31, 2011	4
	Condensed Consolidated Statements of Comprehensive Income
	Three months ended December 29, 2012 and December 31, 2011	5
	Condensed Consolidated Balance Sheets
	December 29, 2012 and September 29, 2012	6
	Condensed Consolidated Statements of Cash Flows
	Three months ended December 29, 2012 and December 31, 2011	7
	Notes to Condensed Consolidated Financial Statements	8
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	26
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	38
Item 4.	Controls and Procedures	40
Part II.	Other Information
Item 1.	Legal Proceedings	41
Item 1A.	Risk Factors	41
Item 6.	Exhibits	56
Signatures		57

2

SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

This quarterly report contains certain forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. All statements included in or incorporated by reference in this quarterly report, other than statements of historical fact, are forward-looking statements. These statements are generally accompanied by words such as “trend,” “may,” “will,” “could,” “would,” “should,” “expect,” “plan,” “anticipate,” “rely,” “believe,” “estimate,” “predict,” “intend,” “potential,” “continue,” "outlook," “forecast” or the negative of such terms, or other comparable terminology, including without limitation statements made under “Future Trends,” “Our Strategy,” discussions regarding our bookings and in “Management’s Discussion and Analysis of Financial Condition and Results of Operations.” Forward-looking statements also include the assumptions underlying or relating to any of the foregoing statements. Actual results of Coherent, Inc. (referred to herein as the Company, we, our or Coherent) may differ significantly from those anticipated in these forward-looking statements as a result of various factors, including those discussed in the sections captioned “Future Trends,” “Risk Factors,” “Key Performance Indicators,” as well as any other cautionary language in this quarterly report. All forward-looking statements included in the document are based on information available to us on the date hereof. We undertake no obligation to update these forward-looking statements as a result of events or circumstances or to reflect the occurrence of unanticipated events or non-occurrence of anticipated event.

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PART I.  FINANCIAL INFORMATION

ITEM 1.  FINANCIAL STATEMENTS

COHERENT, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(Unaudited; in thousands, except per share data) 

	Three Months Ended
	December 29, 2012			December 31, 2011
Net sales	$	183,202		$	190,767
Cost of sales	105,567			110,408
Gross profit	77,635			80,359
Operating expenses:
Research and development	19,301			18,779
Selling, general and administrative	36,982			34,631
Amortization of intangible assets	854			1,636
Total operating expenses	57,137			55,046
Income from operations	20,498			25,313
Other income (expense):
Interest and dividend income	50			202
Interest expense	(12		)	(2		)
Other—net	(1,475		)	318
Total other income (expense), net	(1,437		)	518
Income before income taxes	19,061			25,831
Provision for income taxes	4,908			8,780
Net income	$	14,153		$	17,051
Net income per share:
Basic	$	0.60		$	0.73
Diluted	$	0.58		$	0.71
Shares used in computation:
Basic	23,770			23,462
Diluted	24,222			23,961

See Accompanying Notes to Condensed Consolidated Financial Statements.

4

COHERENT, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(Unaudited; in thousands) 

	Three Months Ended
	December 29, 2012		December 31, 2011
Net income	$	14,153	$	17,051
Other comprehensive income (loss):
Translation adjustment	4,120		(10,321		)
Changes in unrealized gains (losses) on available-for-sale securities, net of taxes	1		16
Other comprehensive income (loss), net of tax	4,121		(10,305		)
Comprehensive income	$	18,274	$	6,746

(1) Tax expense (benefit) of $(19) and $104 was provided on translation adjustments during the three months endedDecember 29, 2012 and December 31, 2011, respectively.  Tax expense (benefit) on changes in unrealized gains (losses) on available-for-sale securities was insignificant.

See Accompanying Notes to Condensed Consolidated Financial Statements.

5

COHERENT, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED BALANCE SHEETS

(Unaudited; in thousands, except par data)

	December 29, 2012		September 29, 2012
ASSETS
Current assets:
Cash and cash equivalents	$	87,996	$	67,761
Short-term investments	91,781		157,168
Accounts receivable—net of allowances of $1,769 and $1,443, respectively	126,010		144,345
Inventories	169,002		160,113
Prepaid expenses and other assets	55,611		61,730
Deferred tax assets	21,083		23,368
Total current assets	551,483		614,485
Property and equipment, net	116,574		115,096
Goodwill	111,624		77,689
Intangible assets, net	50,127		9,473
Other assets	67,296		64,029
Total assets	$	897,104	$	880,772
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Current portion of long-term obligations	$	15	$	17
Accounts payable	29,396		29,088
Income taxes payable	27,621		33,944
Other current liabilities	101,539		90,739
Total current liabilities	158,571		153,788
Long-term obligations	—		2
Other long-term liabilities	67,269		55,326
Commitments and contingencies (Note 11)
Stockholders’ equity:
Common stock, par value $.01 per share:
Authorized—500,000 shares
Outstanding—24,041 shares and 23,746 shares, respectively	240		237
Additional paid-in capital	137,079		131,708
Accumulated other comprehensive income	44,576		40,455
Retained earnings	489,369		499,256
Total stockholders’ equity	671,264		671,656
Total liabilities and stockholders’ equity	$	897,104	$	880,772

See Accompanying Notes to Condensed Consolidated Financial Statements.

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COHERENT, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited; in thousands)

	Three Months Ended
	December 29, 2012			December 31, 2011
Cash flows from operating activities:
Net income	$	14,153		$	17,051
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	6,108			5,828
Amortization of intangible assets	1,181			1,636
Deferred income taxes	(275		)	(527		)
Stock-based compensation	4,994			4,022
Excess tax benefit from stock-based compensation arrangements	—			(1,681		)
Other non-cash (income) expense	522			1,151
Changes in assets and liabilities, net of effect of acquisitions:
Accounts receivable	19,452			9,161
Inventories	2,113			2,671
Prepaid expenses and other assets	(4,281		)	(7,321		)
Other assets	(666		)	(497		)
Accounts payable	(445		)	(4,715		)
Income taxes payable/receivable	(410		)	(8,210		)
Other current liabilities	4,056			(3,110		)
Other long-term liabilities	821			676
Net cash provided by operating activities	47,323			16,135
Cash flows from investing activities:
Purchases of property and equipment	(3,901		)	(8,139		)
Proceeds from dispositions of property and equipment	—			26
Purchases of available-for-sale securities	(63,630		)	(12,593		)
Proceeds from sales and maturities of available-for-sale securities	128,526			30,188
Acquisition of businesses, net of cash acquired	(67,289		)	—
Net cash (used in) provided by investing activities	(6,294		)	9,482
Cash flows from financing activities:
Short-term borrowings	—			4,786
Repayments of short-term borrowings	—			(4,786		)
Net change in capital lease obligations	(4		)	(4		)
Issuance of common stock under employee stock option and purchase plans	4,712			4,568
Cash dividend paid on common stock	(24,040		)	—
Repurchase of common stock	—			(20,665		)
Net settlement of restricted common stock	(4,046		)	(4,413		)
Excess tax benefits from stock-based compensation arrangements	—			1,681
Net cash used in financing activities	(23,378		)	(18,833		)
Effect of exchange rate changes on cash and cash equivalents	2,584			(6,183		)
Net increase in cash and cash equivalents	20,235			601
Cash and cash equivalents, beginning of period	67,761			167,061
Cash and cash equivalents, end of period	$	87,996		$	167,662
Supplemental disclosure of cash flow information:
Cash paid during the period for:
Interest	$	12		$	3
Income taxes	$	6,150		$	25,818
Cash received during the period for:
Income taxes	$	405		$	9,662
Non-cash investing and financing activities:
Unpaid property and equipment	$	1,000		$	1,933

See Accompanying Notes to Condensed Consolidated Financial Statements.

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COHERENT, INC. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

1.    BASIS OF PRESENTATION

The accompanying unaudited condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) have been condensed or omitted pursuant to such rules and regulations. These interim condensed consolidated financial statements and notes thereto should be read in conjunction with the Coherent, Inc. (referred to herein as the “Company,” “we,” “our,” “us” or “Coherent”) consolidated financial statements and notes thereto filed on Form 10-K for the fiscal year ended September 29, 2012. In the opinion of management, all adjustments necessary for a fair presentation of financial condition and results of operation as of and for the periods presented have been made and include only normal recurring adjustments. Interim results of operations are not necessarily indicative of results to be expected for the year or any other interim periods presented therein. Our fiscal year ends on the Saturday closest to September 30 and our first fiscal quarters include 13 weeks of operations in each fiscal year presented. Fiscal years 2013 and 2012 each include 52 weeks.

2.    RECENT ACCOUNTING STANDARDS

Adoption of New Accounting Pronouncements

In July 2012, the Financial Accounting Standards Board (“FASB”) amended existing guidance related to goodwill and other intangible assets by giving an entity testing an indefinite-lived intangible asset for impairment the option to first assess qualitative factors to determine whether it is more likely than not (that is, a likelihood of more than 50 percent) that the fair value of an intangible asset is less than its carrying amount. If the entity determines, on the basis of qualitative factors, that the fair value of the indefinite-lived intangible asset is not more likely than not impaired, the entity would not need to calculate the fair value of the asset. The guidance does not revise the requirement to test indefinite-lived intangible assets annually for impairment or to test these assets for impairment between annual tests if there is a change in events or circumstances. This amended guidance was effective for annual and interim impairment tests performed for fiscal years beginning after September 15, 2012. We adopted this authoritative guidance in the first quarter of fiscal 2013. As we did not have any indefinite-lived intangible assets recorded in our consolidated balance sheet, the implementation of this authoritative guidance did not have a material impact on our consolidated financial position, results of operations and cash flows in connection with our impairment testing.

Recently Issued Accounting Pronouncement

In December 2011, the FASB issued guidance which requires an entity to disclose information about offsetting and related arrangements to enable financial statement users to evaluate the effect or potential effect of netting arrangements, including rights of setoff associated with the entity's recognized financial assets and liabilities, on the entity's financial position. The new disclosures will enable financial statement users to compare balance sheets prepared under U.S. GAAP and International Financial Reporting Standards ("IFRS"), which are subject to different offsetting models. The disclosures will be limited to financial instruments (and derivatives) subject to enforceable master netting arrangements or similar agreements. Similar agreements include derivative clearing agreements, global master repurchase agreements, and global master securities lending agreements. Financial instruments and transactions that will be subject to the disclosure requirements may include derivatives, repurchase and reverse repurchase agreements, and securities lending and borrowing arrangements. An entity should provide the disclosures required by those amendments retrospectively for all comparative periods presented. The guidance is effective for us beginning in fiscal 2014. We are currently evaluating the potential impact, if any, of the adoption of this guidance on our consolidated financial position, results of operations and cash flows.

3.BUSINESS COMBINATIONS

Lumera Laser GmbH

On December 20, 2012, we acquired privately held Lumera Laser GmbH (Kaiserslautern, Germany) ("Lumera") for approximately $51.5 million, excluding transaction costs. Lumera manufactures ultrafast solid state lasers for

8

microelectronics, OEM medical and materials processing applications. Lumera has been included in our Specialty Lasers and Systems segment.

Our preliminary allocation of the purchase price is as follows (in thousands):

Tangible assets	$	14,820
Goodwill	24,628
Intangible assets:
Existing technology	20,300
In-process R&D	1,800
Trade name	200
Customer lists	6,500
Backlog	1,000
Deferred tax liabilities	(8,994)
Liabilities assumed	(8,793)
Total	$	51,461

Results of operations for the business have been included in our consolidated financial statements subsequent to the date of acquisition and pro forma results of operations in accordance with authoritative guidance for prior periods have not been presented because the effect of the acquisition was not material to our prior period consolidated financial results.

None of the goodwill from this purchase is deductible for tax purposes.

The identifiable intangible assets are being amortized over their respective useful lives of less than one to six years.

In-process research and development (“IPR&D”) consists of two projects that have not yet reached technological feasibility. Acquired IPR&D assets are initially recognized at fair value and are classified as indefinite-lived assets until the successful completion or abandonment of the associated research and development efforts. The value assigned to IPR&D was determined by considering the value of the products under development to the overall development plan, estimating the resulting net cash flows from the projects when completed and discounting the net cash flows to their present value. During the development period, these assets will not be amortized as charges to earnings; instead these assets will be subject to periodic impairment testing. Upon successful completion of the development process for the acquired IPR&D projects, the assets would then be considered finite-lived intangible assets and amortization of the assets will commence. None of the projects have been completed as of December 29, 2012.

We expensed $0.3 million of acquisition-related costs as selling, general and administrative expenses in our consolidated statements of operations in the three months endedDecember 29, 2012 and expensed $0.3 million of acquisition-related costs as selling, general and administrative expenses in our consolidated statements of operations in fiscal 2012.

Innolight Innovative Laser and Systemtechnik GmbH

On October 30, 2012, we acquired all of the outstanding shares of Innolight Innovative Laser and Systemtechnik GmbH ("Innolight") for approximately $18.3 million, excluding transaction costs. Innolight provides a core technology building block for an emerging class of commercial, sub-nanosecond lasers for microelectronics manufacturing. Its semiconductor-based architecture delivers pulsed output that can be amplified by conventional or fiber amplifiers to ultimately deliver infrared, green or ultraviolet light capable of processing a range of materials. Innolight has been included in our Specialty Lasers and Systems segment.

Our preliminary allocation of the purchase price is as follows (in thousands):

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Tangible assets	$	2,510
Goodwill	8,253
Intangible assets:
Existing technology	8,500
In-process R&D	430
Trade name	100
Customer lists	2,800
Deferred tax liabilities	(3,777		)
Liabilities assumed	(480		)
Total	$	18,336

Results of operations for the business have been included in our consolidated financial statements subsequent to the date of acquisition and pro forma results of operations in accordance with authoritative guidance for prior periods have not been presented because the effect of the acquisition was not material to our prior period consolidated financial results.

None of the goodwill from this purchase is deductible for tax purposes.

The identifiable intangible assets are being amortized over their respective useful lives of six to seven years.

IPR&D consists of two projects that have not yet reached technological feasibility. Acquired IPR&D assets are initially recognized at fair value and are classified as indefinite-lived assets until the successful completion or abandonment of the associated research and development efforts. The value assigned to IPR&D was determined by considering the value of the products under development to the overall development plan, estimating the resulting net cash flows from the projects when completed and discounting the net cash flows to their present value. During the development period, these assets will not be amortized as charges to earnings; instead these assets will be subject to periodic impairment testing. Upon successful completion of the development process for the acquired IPR&D projects, the assets would then be considered finite-lived intangible assets and amortization of the assets will commence. The projects have not been completed as of December 29, 2012.

We expensed $0.1 million of acquisition-related costs as selling, general and administrative expenses in our consolidated statements of operations in the three months endedDecember 29, 2012 and expensed $0.1 million of acquisition-related costs as selling, general and administrative expenses in our consolidated statements of operations in fiscal 2012.

Fiscal 2012 and Fiscal 2011 acquisitions

As more fully described in our Annual Report on Form 10-K for our fiscal year ended September 29, 2012, we acquired two companies in fiscal 2012 and fiscal 2011:

• We acquired MiDAZ Lasers Ltd. ("Midaz") in the fourth quarter of fiscal 2012 for approximately $3.8 million in cash and recorded goodwill and intangible assets of approximately $4.6 million.

• We acquired Hypertronics Pte Ltd (“Hypertronics”) in the second quarter of fiscal 2011 for approximately $14.5 million in cash and recorded goodwill and intangible assets of approximately $11.8 million.

Both businesses have been included in our Specialty Lasers and Systems segment. Results of operations for these businesses have been included in our consolidated financial statements subsequent to the date of their acquisition and pro forma results of operations in accordance with authoritative guidance for prior periods have not been presented because the effect of these acquisitions was not material to our prior period consolidated financial results.

During the second quarter of fiscal 2012, we determined that one of the hardware projects classified as IPR&D acquired from Hypertronics would not be completed.  As a result, $0.2 million was expensed in the second fiscal quarter for that project.  During the fourth quarter of fiscal 2012, we decided to no longer pursue orders of Hypertronics' legacy products and thus determined that an impairment review of the intangible assets was required. As a result of our analysis, we determined that the intangible assets were fully impaired and that the remaining hardware projects classified as IPR&D acquired from Hypertronics would not be completed.  As a result, we recorded a $4.0 million charge in amortization

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expense in the fourth quarter of fiscal 2012. We also wrote off $0.3 million of inventory unique to these products that were not expected to be resold.

4.FAIR VALUES

We measure our cash equivalents and marketable securities at fair value. The fair values of our financial assets and liabilities are determined using quoted market prices of identical assets or quoted market prices of similar assets from active markets. Level 1 valuations are obtained from real-time quotes for transactions in active exchange markets involving identical assets. Level 2 valuations are obtained from quoted market prices in active markets involving similar assets; these instruments, which mature within one year and are issued by counterparties with high credit ratings, include U.S. Treasury and international government obligations, investment-grade corporate bonds, certificates of deposit and commercial paper. Level 3 valuations would be based on unobservable inputs to a valuation model and include our own data about assumptions market participants would use in pricing the asset or liability based on the best information available under the circumstances. As of December 29, 2012 and September 29, 2012, we did not have any assets or liabilities valued based on Level 3 valuations.

Financial assets and liabilities measured at fair value as of December 29, 2012 are summarized below (in thousands):

	Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs		Total Fair Value
	(Level 1)		(Level 2)
Money market fund deposits (1)	$	20,932	$	—	$	20,932
Certificates of deposit (2)(7)	—		7,299		7,299
U.S. government obligations (3)(7)	—		86,647		86,647
Corporate notes and obligations (4)(7)	—		8,129		8,129
Commercial paper (1)(7)	—		1,999		1,999
Foreign currency contracts (5)(8)	—		1,092		1,092
Mutual funds — Deferred comp and supplemental plan (6)(9)	6,770		—		6,770

 ___________________________________________________

(1) Included in cash and cash equivalents on the Condensed Consolidated Balance Sheet. The carrying amounts approximate fair value due to the short-term maturities of the cash equivalents.

(2) Includes $5,278 recorded in cash and cash equivalents and $2,021 recorded in short-term investments on the Condensed Consolidated Balance Sheet.

(3) Includes $5,016 recorded in cash and cash equivalents and $81,631 recorded in short-term investments on the Condensed Consolidated Balance Sheet.

(4) Included in short-term investments on the Condensed Consolidated Balance Sheet.

(5) Includes $1,240 recorded in prepaid expenses and other assets and $148 recorded in other current liabilities on the Condensed Consolidated Balance Sheet (see Note 5).

(6) Includes $2,940 recorded in prepaid expenses and other assets and $3,830 recorded in other assets on the Condensed Consolidated Balance Sheet.

(7) Valuations are based upon quoted market prices in active markets involving similar assets. The market inputs used to value these instruments generally consist of market yields, reported trades, broker/dealer quotes or alternative pricing sources with reasonable levels of price transparency. Pricing sources include industry standard data providers, security master files from large financial institutions, and other third party sources which are input into a distribution-curve-based algorithm to determine a daily market value. This creates a “consensus price” or a weighted average price for each security.

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(8) The principal market in which we execute our foreign currency contracts is the institutional market in an over-the-counter environment with a relatively high level of price transparency. The market participants usually are large commercial banks. Our foreign currency contracts’ valuation inputs are based on quoted prices and quoted pricing intervals from public data sources and do not involve management judgment.

(9) The fair value of mutual funds is determined based on quoted market prices. Securities traded on a national exchange are stated at the last reported sales price on the day of valuation; other securities traded in over-the-counter market and listed securities for which no sale was reported on that date are stated as the last quoted bid price.

Financial assets and liabilities measured at fair value as of September 29, 2012 are summarized below (in thousands):

	Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs			Total Fair Value
	(Level 1)		(Level 2)
Money market fund deposits(1)	$	10,340	$	—		$	10,340
Certificates of deposit(2)(7)	—		31,253			31,253
U.S. and international government obligations(3)(7)	—		110,967			110,967
Corporate notes and obligations(4)(7)	—		43,406			43,406
Commercial paper (3)(7)	—		2,000			2,000
Foreign currency contracts(5)(8)	—		(21		)	(21		)
Mutual funds—Deferred comp and supplemental plan(6)(9)	6,400		—			6,400

 ___________________________________________________

(1) Included in cash and cash equivalents on the Condensed Consolidated Balance Sheet. The carrying amounts approximate fair value due to the short-term maturities of the cash equivalents.

(2) Includes $29,234 recorded in cash and cash equivalents and $2,019 recorded in short-term investments on the Condensed Consolidated Balance Sheet.

(3) Included in short-term investments on the Condensed Consolidated Balance Sheet.

(4) Includes $1,223 recorded in cash and cash equivalents and $42,183 recorded in short-term investments on the Condensed Consolidated Balance Sheet.

(5) Includes $626 recorded in prepaid expenses and other assets and $645 recorded in other current liabilities on the Condensed Consolidated Balance Sheet.

(6) Includes $2,891 recorded in prepaid expenses and other assets and $3,509 recorded in other assets on the Condensed Consolidated Balance Sheet.

(7) Valuations are based upon quoted market prices in active markets involving similar assets. The market inputs used to value these instruments generally consist of market yields, reported trades, broker/dealer quotes or alternative pricing sources with reasonable levels of price transparency. Pricing sources include industry standard data providers, security master files from large financial institutions, and other third party sources which are input into a distribution-curve-based algorithm to determine a daily market value. This creates a “consensus price” or a weighted average price for each security.

(8) The principal market in which we execute our foreign currency contracts is the institutional market in an over-the-counter environment with a relatively high level of price transparency. The market participants usually are large commercial banks. Our foreign currency contracts’ valuation inputs are based on quoted prices and quoted pricing intervals from public data sources and do not involve management judgment.

(9) The fair value of mutual funds is determined based on quoted market prices. Securities traded on a national exchange are stated at the last reported sales price on the day of valuation; other securities traded in over-the-counter market and listed securities for which no sale was reported on that date are stated as the last quoted bid price.

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5.     DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES

All derivatives, whether designated in hedging relationships or not, are recorded on the Condensed Consolidated Balance Sheet at fair value. We enter into foreign exchange forwards to minimize the risks of foreign currency fluctuation of specific assets and liabilities on the balance sheet; these are not designated as hedging instruments. Our derivative contracts do not contain any credit risk related contingent features and do not require collateral or other security to be furnished by us or the counterparties.

We maintain operations in various countries outside of the United States and have foreign subsidiaries that manufacture and sell our products in various global markets. The majority of our sales are transacted in U.S. dollars. However, we do generate revenues in other currencies, primarily the Japanese Yen, the Euro and the Korean Won. As a result, our earnings, cash flows and cash balances are exposed to fluctuations in foreign currency exchange rates. We attempt to limit these exposures through financial market instruments. We utilize derivative instruments, primarily forward contracts with maturities of two months or less, to manage our exposure associated with anticipated cash flows and net asset and liability positions denominated in foreign currencies. Gains and losses on the forward contracts are mitigated by gains and losses on the underlying instruments. We do not use derivative financial instruments for speculative or trading purposes. If a financial counterparty to any of our hedging arrangements experiences financial difficulties or is otherwise unable to honor the terms of the foreign currency hedge, we may experience material financial losses.

For derivative instruments that are not designated as hedging instruments, gains and losses are recognized in other income (expense).

The outstanding notional contract and fair value amounts of hedge contracts, with maximum maturity of two months, are as follows (in thousands):

	U.S. Notional Contract Value						U.S. Notional Fair Value
	December 29, 2012			September 29, 2012			December 29, 2012			September 29, 2012
Euro currency hedge contracts
Purchase	$	65,490		$	61,779		$	66,543		$	62,404
Korean Won currency hedge contracts
Sell	$	(26,058	)	$	(39,039	)	$	(26,106	)	$	(39,559	)
Other foreign currency hedge contracts
Sell	$	(24,323	)	$	(20,452	)	$	(24,235	)	$	(20,578	)

The fair value of our derivative instruments are included in prepaid expenses and other assets and in other current liabilities in our Condensed Consolidated Balance Sheets; such amounts were not material as of December 29, 2012 and September 29, 2012.

The amount of non-designated derivative instruments’ gain in the Condensed Consolidated Statements of Operations included in other income (expense) for the three months endedDecember 29, 2012 and December 31, 2011 is as follows (in thousands):

	Amount of Gain or (Loss) Recognized in
	Income on Derivatives
	Three Months Ended
	December 29, 2012
Derivatives not designated as hedging instruments
Foreign exchange contracts	$	1,900

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	Amount of Gain or (Loss) Recognized in
	Income on Derivatives
	Three Months Ended
	December 31, 2011
Derivatives not designated as hedging instruments
Foreign exchange contracts	$	1,982

6.SHORT-TERMINVESTMENTS

We consider all highly liquid investments with maturities of three months or less at the time of purchase to be cash equivalents. Investments classified as available-for-sale are reported at fair value with unrealized gains and losses, net of related income taxes, recorded as a separate component of other comprehensive income (“OCI”) in stockholders’ equity until realized. Interest and amortization of premiums and discounts for debt securities are included in interest income. Gains and losses on securities sold are determined based on the specific identification method and are included in other income (expense).

Cash, cash equivalents and short-term investments consist of the following (in thousands):

	December 29, 2012
	Cost Basis		Unrealized Gains		Unrealized Losses			Fair Value
Cash and cash equivalents	$	87,980	$	16	$	—		$	87,996
Short-term investments:
Available-for-sale securities:
Certificates of deposit	$	2,008	$	13	$	—		$	2,021
U.S. Treasury and agency obligations	81,272		359		—			81,631
Corporate notes and obligations	8,048		82		(1		)	8,129
Total short-term investments	$	91,328	$	454	$	(1	)	$	91,781

	September 29, 2012
	Cost Basis		Unrealized Gains		Unrealized Losses			Fair Value
Cash and cash equivalents	$	67,752	$	9	$	—		$	67,761
Short-term investments:
Available-for-sale securities:
Certificates of deposit	$	2,017	$	2	$	—		$	2,019
U.S. Treasury and agency obligations	108,284		666		(2		)	108,948
International government obligations	2,004		14		—			2,018
Corporate notes and obligations	41,912		272		(1		)	42,183
Commercial paper	2,000		—		—			2,000
Total short-term investments	$	156,217	$	954	$	(3	)	$	157,168

At December 29, 2012, gross unrealized losses on our investments with unrealized losses that are not deemed to be other-than-temporarily impaired were $2,000 on corporate notes and obligations of $6.7 million.

The amortized cost and estimated fair value of available-for-sale investments in debt securities as of December 29, 2012 and September 29, 2012 classified as short-term investments on our condensed consolidated balance sheet were as follows (in thousands):

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	December 29, 2012				September 29, 2012
	Amortized Cost		Estimated Fair Value		Amortized Cost		Estimated Fair Value
Investments in available-for-sale debt securities due in less than one year	$	89,320	$	89,760	$	154,200	$	155,149

During the three months endedDecember 29, 2012, we received proceeds totaling $56.6 million from the sale of available-for-sale securities and realized gross gains of less than $0.1 million. During the three months endedDecember 31, 2011, we received proceeds totaling $27.5 million from the sale of available-for-sale securities and realized gross gains of less than $0.1 million.

At December 29, 2012, gross unrealized losses on our investments with unrealized losses that are not deemed to be other-than-temporarily impaired were $2,000 on corporate notes and obligations of $6.7 million.

7.    GOODWILL AND INTANGIBLEASSETS

Goodwill is tested for impairment on an annual basis and between annual tests if events or circumstances indicate that an impairment loss may have occurred, and we write down these assets when impaired. We perform our annual impairment tests during the fourth quarter of each fiscal year using the opening balance sheet as of the first day of the fourth quarter, with any resulting impairment recorded in the fourth quarter of the fiscal year.

We evaluate long-lived assets and amortizable intangible assets whenever events or changes in business circumstances or our planned use of assets indicate that their carrying amounts may not be fully recoverable or that their useful lives are no longer appropriate. Reviews are performed to determine whether the carrying values of assets are impaired based on comparison to the undiscounted expected future cash flows identifiable to such long-lived and amortizable intangible assets. If the comparison indicates that impairment exists, the impaired asset is written down to its fair value.

During the three months endedDecember 29, 2012, we noted no indications of impairment or triggering events to cause us to review goodwill for potential impairment. We will conduct our annual goodwill testing during the fourth fiscal quarter.

The changes in the carrying amount of goodwill by segment for the period from September 29, 2012 to December 29, 2012 are as follows (in thousands):

	Specialty Lasers and Systems		Commercial Lasers and Components		Total
Balance as of September 29, 2012	$	71,326	$	6,363	$	77,689
Additions (See Note 3)	32,881		—		32,881
Translation adjustments and other	1,054		—		1,054
Balance as of December 29, 2012	$	105,261	$	6,363	$	111,624

Components of our amortizable intangible assets are as follows (in thousands):

	December 29, 2012							September 29, 2012
	Gross Carrying Amount		Accumulated Amortization			Net		Gross Carrying Amount		Accumulated Amortization			Net
Existing technology	$	80,517	$	(45,497	)	$	35,020	$	51,346	$	(44,457	)	$	6,889
Customer lists	17,254		(5,936		)	11,318		7,849		(5,666		)	2,183
Trade name	3,405		(2,878		)	527		3,050		(2,749		)	301
Order backlog (1)	1,000		—			1,000		—		—			—
Non-compete agreement	691		(668		)	23		689		(661		)	28
Production know-how (1)	—		—			—		910		(838		)	72
In-process research & development	2,239		—			2,239		—		—			—
Total	$	105,106	$	(54,979	)	$	50,127	$	63,844	$	(54,371	)	$	9,473

     (1) For accounting purposes, when an intangible asset is fully amortized, it is removed from the disclosure schedule.

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Amortization expense for intangible assets for the three months endedDecember 29, 2012 and December 31, 2011 was $1.2 million and $1.6 million, respectively, which includes $0.9 million and $1.2 million, respectively, for amortization of existing technology and production know-how.

At December 29, 2012, estimated amortization expense for the remainder of fiscal 2013, the next five succeeding fiscal years and all fiscal years thereafter are as follows (in thousands):

	Estimated Amortization Expense
2013 (remainder)	$	8,644
2014	9,461
2015	8,983
2016	8,583
2017	7,587
2018	4,449
Thereafter	2,420
Total	$	50,127

8.     BALANCE SHEET DETAILS

Inventories consist of the following (in thousands):

	December 29, 2012		September 29, 2012
Purchased parts and assemblies	$	48,660	$	46,526
Work-in-process	65,403		60,171
Finished goods	54,939		53,416
Total inventories	$	169,002	$	160,113

Prepaid expenses and other assets consist of the following (in thousands):

	December 29, 2012		September 29, 2012
Prepaid and refundable income taxes	$	9,994	$	20,634
Other taxes receivable	28,609		25,607
Prepaid expenses and other	17,008		15,489
Total prepaid expenses and other assets	$	55,611	$	61,730

Other assets consist of the following (in thousands):

	December 29, 2012		September 29, 2012
Assets related to deferred compensation arrangements	$	22,450	$	21,990
Deferred tax assets	39,189		37,160
Other assets	5,657		4,879
Total other assets	$	67,296	$	64,029

Other current liabilities consist of the following (in thousands):

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	December 29, 2012		September 29, 2012
Accrued payroll and benefits	$	28,013	$	28,100
Deferred income	17,027		17,465
Reserve for warranty	18,510		17,442
Accrued expenses and other	11,613		10,445
Other taxes payable	22,673		15,457
Customer deposits	3,703		1,830
Total other current liabilities	$	101,539	$	90,739

There were no restructuring plans or activities in the three months endedDecember 29, 2012. There were no new restructuring charges during fiscal 2012. The closure of our Finland site was completed in the third quarter of fiscal 2011, with the last payments and other reductions completed during fiscal 2012.

We provide warranties on certain of our product sales and reserves for estimated warranty costs are recorded during the period of sale. The determination of such reserves requires us to make estimates of product return rates and expected costs to repair or replace the products under warranty. We currently establish warranty reserves based on historical warranty costs for each product line. The weighted average warranty period covered is approximately 15 months. If actual return rates and/or repair and replacement costs differ significantly from our estimates, adjustments to cost of sales may be required in future periods.

Components of the reserve for warranty costs during the first three months of fiscal 2013 and 2012 were as follows (in thousands):

	Three Months Ended
	December 29, 2012			December 31, 2011
Beginning balance	$	17,442		$	16,704
Additions related to current period sales	5,777			6,374
Warranty costs incurred in the current period	(6,040		)	(7,249		)
Accruals resulting from acquisitions	1,735			—
Adjustments to accruals related to foreign exchange and other	(404		)	206
Ending balance	$	18,510		$	16,035

Other long-term liabilities consist of the following (in thousands):

	December 29, 2012		September 29, 2012
Long-term taxes payable	$	19,695	$	21,281
Deferred compensation	23,286		22,816
Deferred tax liabilities	13,676		726
Deferred income	2,303		2,191
Asset retirement obligations liability	2,021		2,029
Other long-term liabilities	6,288		6,283
Total other long-term liabilities	$	67,269	$	55,326

9.     SHORT-TERM BORROWINGS

We have several lines of credit which allow us to borrow in the applicable local currency. We have a total of $15.8 million of unsecured foreign lines of credit as of December 29, 2012.  At December 29, 2012, we had used $2.3 million of these available foreign lines of credit as guarantees. These credit facilities were used in Europe during the first fiscal quarter of 2013.  In addition, our domestic line of credit consists of a $50.0 million unsecured revolving credit account with Union Bank of California. The agreement will expire on May 31, 2014. The line of credit is subject to covenants related to

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financial ratios and tangible net worth with which we are currently in compliance.  No amounts have been drawn upon our domestic line of credit as of December 29, 2012.

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10. STOCK-BASED COMPENSATION

Fair Value of Stock Compensation

We recognize compensation expense for all share based payment awards based on the fair value of such awards. The expense is recognized on a straight-line basis over the respective requisite service period of the awards.

Determining Fair Value

The fair values of shares purchased under the Employee Stock Purchase Plan (“ESPP”) for the three months endedDecember 29, 2012 and December 31, 2011, respectively, were estimated using the following weighted-average assumptions:

	Employee Stock Purchase Plan
	Three Months Ended
	December 29, 2012			December 31, 2011
Expected life in years	0.5			0.5
Expected volatility	34.8		%	49.3		%
Risk-free interest rate	0.2		%	0.1		%
Expected dividend yield	1.0		%	—
Weighted average fair value per share	$	10.60		$	14.93

There were no stock options granted during the three months endedDecember 29, 2012 and December 31, 2011.

Restricted stock awards and restricted stock units are independent of option grants and are typically subject to vesting restrictions—either time-based or performance-based conditions for vesting. Until restricted stock vests, shares (including those issuable upon vesting of the applicable restricted stock unit) are subject to forfeiture if employment terminates prior to the release of restrictions and cannot be transferred.

•The service based restricted stock unit awards are generally subject to annual vesting over two to three years from the date of grant.

•The automatic annual grants of restricted stock units for non-employee members of the board of directors vest on February 15 of the calendar year following the grant, which is made following our annual meeting of shareholders.

•The market-based performance restricted stock unit award grants are generally either subject to annual vesting overthreeyears from the date of grant orsubject to a single vest measurement three years from the date of grant, depending upon achievement of performance measurements based on the performance of the Company's Total Shareholder Returns (as defined in the plan) compared with the performance of the Russell 2000 Index.

We grant market-based performance restricted stock units to officers and certain employees. The performance stock unit agreements provide for the award of performance stock units with each unit representing the right to receive one share of our common stock to be issued after the applicable award period. The final number of units awarded for this grant will be determined as of the vesting dates, based upon our total shareholder return over the performance period compared to the Russell 2000 Index and could range from a minimum of no units to a maximum of twice the initial award. The weighted average fair value for these performance units was determined using a Monte Carlo simulation model incorporating the following weighted average assumptions:

	Three Months Ended
	December 29, 2012		December 31, 2011
Risk-free interest rate	0.33	%	0.39	%
Volatility	37.9	%	41.8	%
Weighted average fair value	$48.48		$71.59

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We recognize the estimated cost of these awards, as determined under the simulation model, over the related service period, with no adjustment in future periods based upon the actual shareholder return over the performance period.

Stock-Based Compensation Expense

The following table shows total stock-based compensation expense and related tax benefits included in the condensed consolidated statements of operations for the three months endedDecember 29, 2012 and December 31, 2011 (in thousands):

	Three Months Ended
	December 29, 2012			December 31, 2011
Cost of sales	$	435		$	369
Research and development	476			393
Selling, general and administrative	4,083			3,260
Income tax benefit	(1,483		)	(1,328		)
	$	3,511		$	2,694

During the three months endedDecember 29, 2012, $0.6 million was capitalized into inventory for all stock plans, $0.4 million was amortized to cost of sales and $0.7 million remained in inventory at December 29, 2012. During the three months endedDecember 31, 2011, $0.5 million was capitalized into inventory for all stock plans, $0.4 million was amortized to cost of sales and $0.5 million remained in inventory at December 31, 2011.  Management has made an estimate of expected forfeitures and is recognizing compensation costs only for those equity awards expected to vest.

At December 29, 2012, the total compensation cost related to unvested stock-based awards granted to employees under the Company’s stock plans but not yet recognized was approximately $26.2 million, net of estimated forfeitures of $1.3 million. This cost will be amortized on a straight-line basis over a weighted-average period of approximately 1.3 years and will be adjusted for subsequent changes in estimated forfeitures.

At December 29, 2012, total compensation cost related to options to purchase common shares under the ESPP but not yet vested was approximately $0.6 million, which will be recognized over the six month offering period.

The stock option exercise tax benefits reported in the statement of cash flows results from the excess tax benefits arising from tax deductions in excess of the stock-based compensation cost recognized, determined on a grant-by-grant basis. During the first three months of fiscal 2013 and fiscal 2012, we recorded $0.0 and $1.7 million, respectively, of excess tax benefits as cash flows from financing activities.

Stock Options & Awards Activity

The following is a summary of option activity for our Stock Option Plans (in thousands, except per share amounts and weighted average remaining contractual term in years):

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	Number of Shares		Weighted Average Exercise Price Per Share		Weighted Average Remaining Contractual Term in Years	Aggregate Intrinsic Value
Outstanding at September 29, 2012	641		$	27.86
Granted	—		—
Exercised	(68	)	26.96
Forfeitures	—		—
Expirations	—		—
Outstanding at December 29, 2012	573		$	27.97	3.2 years	$	12,168
Vested and expected to vest at December 29, 2012	573		$	27.97	3.2 years	$	12,168
Exercisable at December 29, 2012	556		$	27.47	3.0 years	$	12,083

The aggregate intrinsic value is calculated as the difference between the exercise price of the underlying options and the quoted price of our common stock at the end of the reporting period.  There were approximately 0.6 million outstanding options that were in-the-money as of December 29, 2012.  The aggregate intrinsic value of options exercised under the Company’s stock plans for the three months endedDecember 29, 2012 and December 31, 2011 were $1.2 million and $1.6 million, respectively, determined as of the date of option exercise.

The following table summarizes the activity of our time based and market- performance based restricted stock units for the first three months of fiscal 2013 (in thousands, except per share amounts):

	Time Based Restricted Stock Units				Market-Based Performance Restricted Stock Units
	Number of Shares(1)		Weighted Average Grant Date Fair Value		Number of Shares(2)		Weighted Average Grant Date Fair Value
Nonvested stock at September 29, 2012	440		$	47.81	152		$	57.55
Granted	242		42.28		97		48.48
Vested	(217	)	42.35		(28	)	49.50
Forfeited	—		—		(5	)	49.23
Nonvested stock at December 29, 2012	465		$	47.48	216		$	54.73

__________________________________________

(1)Service-based restricted stock vested during each fiscal year.

(2)Performance-based awards and units included at 100% of target goal; under the terms of the awards, the recipient may earn between 0% and 200% of the award.

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11.COMMITMENTS AND CONTINGENCIES

We are subject to legal claims and litigation arising in the ordinary course of business, such as product liability, employment or intellectual property claims. The outcome of any such matters is currently not determinable. Although we do not expect that such legal claims and litigation will ultimately have a material adverse effect on our consolidated financial position or results of operations, an adverse result in one or more matters could negatively affect our results in the period in which they occur.

12.ACCUMULATED OTHER COMPREHENSIVE INCOME

Accumulated other comprehensive income (net of tax) at December 29, 2012 and September 29, 2012 are substantially comprised of accumulated translation adjustments of $44.6 million and $40.4 million, respectively.

13.  EARNINGS PER SHARE

Basic earnings per share is computed based on the weighted average number of shares outstanding during the period, excluding unvested restricted stock. Diluted earnings per share is computed based on the weighted average number of shares outstanding during the period increased by the effect of dilutive employee stock awards, including stock options, restricted stock awards and stock purchase plan contracts, using the treasury stock method.

The following table presents information necessary to calculate basic and diluted earnings per share (in thousands, except per share data): 

	Three Months Ended
	December 29, 2012		December 31, 2011
Weighted average shares outstanding —basic	23,770		23,462
Dilutive effect of employee stock awards	452		499
Weighted average shares outstanding—diluted	24,222		23,961
Net income	$	14,153	$	17,051
Net income per basic share	$	0.60	$	0.73
Net income per diluted share	$	0.58	$	0.71

A total of 73,146 and 207,517 potentially dilutive securities have been excluded from the diluted share calculation for the three months endedDecember 29, 2012 and December 31, 2011, respectively, as their effect was anti-dilutive.

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14.OTHER INCOME (EXPENSE)

Other income (expense) is as follows (in thousands): 

	Three Months Ended
	December 29, 2012			December 31, 2011
Foreign exchange gain (loss)	$	(1,769	)	$	313
Gain (loss) on deferred compensation investments, net	294			(54		)
Other—net	—			59
Other income (expense), net	$	(1,475	)	$	318

15.  STOCK REPURCHASES AND DIVIDENDS

On October 4, 2012, the Board of Directors authorized a buyback program whereby we are authorized to repurchase up to $25.0 million of our common stock. The program was authorized for 12 months from the date of authorization. No shares have been purchased under this program as of December 29, 2012.

On December 10, 2012, we announced that the Board of Directors approved a $1.00 per share special cash dividend on our outstanding common stock payable on December 27, 2012 to stockholders of record on December 19, 2012, resulting in a payment of $24.0 million in the first quarter of fiscal 2013.

16. INCOMETAXES

Income tax expense includes a provision for federal, state and foreign taxes based on the annual estimated effective tax rate applicable to us and our subsidiaries, adjusted for items which are considered discrete to the period. Our estimated effective tax rate for the three months endedDecember 29, 2012 was 25.7%. Our effective tax rate for the three months endedDecember 29, 2012 was lower than the statutory rate of 35%primarily due to permanent differences related to the benefit of income subject to foreign tax rates that are lower than U.S. tax rates, the benefit of foreign tax credits and the benefit of releasing foreign tax reserves accrued under ASC 740-10 (formerly FASB Financial Interpretation No. 48, "Accounting for Uncertainty in Income Taxes") and related interest. These amounts are partially offset by deemed dividend inclusions under the Subpart F tax rules, stock compensation not deductible for tax purposes and limitations on the deductibility of compensation under IRC Section 162(m).

Determining the consolidated provision for income taxes, income tax liabilities and deferred tax assets and liabilities involves judgment. We calculate and provide for income taxes in each of the tax jurisdictions in which we operate, which involves estimating current tax exposures as well as making judgments regarding the recoverability of deferred tax assets in each jurisdiction. The estimates used could differ from actual results, which may have a significant impact on operating results in future periods.

As of December 29, 2012, the total amount of gross unrecognized tax benefits was $25.8 million including gross interest and penalties of $1.3 million, of which $16.3 million, if recognized, would affect our effective tax rate. Our total gross unrecognized tax benefits, net of certain deferred tax assets, were classified as other long-term liabilities in the condensed consolidated balance sheets.

Our policy is to include interest and penalties related to unrecognized tax benefits within the provision for income taxes. As of December 29, 2012, the total amount of gross interest and penalties accrued was $1.3 million, which is classified as other long-term liabilities in the condensed consolidated balance sheets.

We are subject to taxation and file income tax returns in the U.S. federal jurisdiction and in many state and foreign jurisdictions. For U.S. federal income tax purposes, all years prior to 2009 are closed to examination. In our major state jurisdiction and our major foreign jurisdictions, the years prior to 2008 and 2006, respectively, are closed to examination. In December 2011 and January 2012, our three German subsidiaries received notices of tax audits for the fiscal years 2006 through 2010. These audits are currently in process.

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Management believes that it has adequately provided for any adjustments that may result from tax examinations. The Company regularly engages in discussions and negotiations with tax authorities regarding tax matters in various jurisdictions. It is reasonably possible that certain federal, foreign and state tax matters may be concluded in the next 12 months. Although the timing of the resolution and/or closure of audits is highly uncertain, it is reasonably possible that the balance of net unrecognized tax benefits including interest and penalties at December 29, 2012 could be reduced by approximately $0.2 million to $2.4 million in the next 12 months.

The American Taxpayer Relief Act of 2012 (“the Act”), was enacted on January 2, 2013.  Under the Act, the federal research and development credit was retroactively extended for amounts paid or incurred after December 31, 2011 through December 31, 2013.  The look-through treatment of payments between related controlled foreign corporations under the Subpart F rule was also retroactively extended for the same time period. The effects of the change in the tax law will be recognized in our second quarter of fiscal 2013, which is the quarter that the law was enacted.  Accordingly, we anticipate that prior period research and development credits of approximately $1.0 million to $2.5 million from the last three quarters of fiscal 2012 and the first quarter of fiscal 2013 will be recognized in the second quarter of fiscal 2013. In addition, we also anticipate a reduction in the tax impact of the Subpart F income inclusion of up to approximately $0.5 million.

Deferred Income Taxes

As of December 29, 2012, our condensed consolidated balance sheet included net deferred tax assets, before valuation allowance, of approximately $55.2 million, which consists of tax credits carryovers, accruals and reserves, competent authority offset to transfer pricing tax reserves, employee stock-based compensation expenses and certain other liabilities. Management periodically evaluates the realizability of our net deferred tax assets based on all available evidence, both positive and negative. The realization of net deferred tax assets is solely dependent on our ability to generate sufficient future taxable income in the applicable jurisdictions during periods prior to the expiration of tax statutes to fully utilize these assets.  After evaluating all available evidence, we have determined that it is “more likely than not” that a portion of the deferred tax assets would not be realized and we have a total valuation allowance of $9.1 million as of December 29, 2012.  We intend to maintain the valuation allowance until sufficient positive evidence exists to support reversal of the valuation allowance.

17.  SEGMENT INFORMATION

We are organized into two reportable operating segments: Specialty Lasers and Systems (“SLS”) and Commercial Lasers and Components (“CLC”). This segmentation reflects the go-to-market strategies for various products and markets.  SLS develops and manufactures configurable, advanced-performance products largely serving the microelectronics, scientific research and government programs and original equipment manufacturer (“OEM”) components and instrumentation markets. The size and complexity of many of the SLS products generally require service to be performed at the customer site by factory-trained field service engineers. While both segments work to deliver cost-effective solutions, CLC focuses on higher volume products that are offered in set configurations. The product architectures are designed for easy exchange at the point of use such that product service and repairs are generally based upon advanced replacement and depot (i.e., factory) repair. CLC’s primary markets include materials processing, OEM components and instrumentation and microelectronics. 

We have identified SLS and CLC as operating segments for which discrete financial information is available. Both units have dedicated engineering, manufacturing, product business management and product line management functions. A small portion of our outside revenue is attributable to projects and recently developed products for which a segment has not yet been determined. The associated direct and indirect costs are presented in the category of Corporate and other, along with other corporate costs as described below.

Our Chief Executive Officer has been identified as the chief operating decision maker (CODM) as he assesses the performance of the segments and decides how to allocate resources to the segments. Income (loss) from operations is the measure of profit and loss that our CODM uses to assess performance and make decisions. As assets are not a measure used to assess the performance of the company by the CODM, asset information is not tracked or compiled by segment and is not available to be reported in our disclosures. Income (loss) from operations represents the net sales less the cost of sales and direct operating expenses incurred within the operating segments as well as allocated expenses such as shared sales and manufacturing costs. We do not allocate to our operating segments certain operating expenses which we manage separately at the corporate level. These unallocated costs include stock-based compensation and corporate functions (certain research and development, management, finance, legal and human resources) and are included in the results below

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under Corporate and other in the reconciliation of operating results. Management does not consider unallocated Corporate and other costs in its measurement of segment performance.

The following table provides net sales and income (loss) from operations for our operating segments (in thousands):

	Three Months Ended
	December 29, 2012			December 31, 2011
Net sales:
Specialty Laser Systems	$	131,460		$	135,617
Commercial Lasers and Components	51,742			55,150
Total net sales	$	183,202		$	190,767
Income (loss) from operations:
Specialty Laser Systems	$	30,334		$	31,030
Commercial Lasers and Components	1,825			4,020
Corporate and other	(11,661		)	(9,737		)
Total income from operations	$	20,498		$	25,313

Major Customers

We had two major customers during the three months endedDecember 29, 2012 who accounted for 10.9% and 10.2%, respectively, of consolidated revenue; both customers purchased primarily from our SLS segment. There was one major customer who accounted for 15.6% of consolidated revenue for the three months endedDecember 31, 2011, who purchased primarily from our SLS segment.

We had one major customer who accounted for 12.0% of accounts receivable at December 29, 2012. There were two major customers who accounted for 14.9% and 14.8%, respectively, of accounts receivable at September 29, 2012.

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ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

COMPANY OVERVIEW

BUSINESS BACKGROUND

We are one of the world’s leading suppliers of photonics-based solutions in a broad range of commercial and scientific research applications. We design, manufacture, service and market lasers and related accessories for a diverse group of customers. Since

inception in 1966, we have grown through internal expansion and through strategic acquisitions of complementary businesses, technologies, intellectual property, manufacturing processes and product offerings.

We are organized into two operating segments: Specialty Lasers and Systems (“SLS”) and Commercial Lasers and Components (“CLC”). This segmentation reflects the go-to-market strategies for various products and markets. SLS develops and manufactures configurable, advanced performance products largely serving the microelectronics, scientific research and government programs and OEM components and instrumentation markets. The size and complexity of many of the SLS products require service to be performed at the customer site by factory trained field service engineers. While both segments deliver cost-effective photonics solutions, CLC focuses on higher volume products that are offered in set configurations. The product architectures are designed for easy exchange at the point of use such that substantially all product service and repairs are based upon advanced replacement and depot (i.e., factory) repair. CLC’s primary markets include materials processing, original equipment manufacturer (“OEM”) components and instrumentation and microelectronics.

Income (loss) from operations is the measure of profit and loss that our chief operating decision maker (“CODM”) uses to assess performance and make decisions. Income (loss) from operations represents the sales less the cost of sales and direct operating expenses incurred within the operating segments as well as allocated expenses such as shared sales and manufacturing costs. We do not allocate to our operating segments certain operating expenses, which we manage separately at the corporate level. These unallocated costs include stock-based compensation and corporate functions (certain advanced research and development, management, finance, legal and human resources) and are included in Corporate and other. Management does not consider unallocated Corporate and other costs in its measurement of segment performance.

MARKET APPLICATIONS

Our products address a broad range of applications that we group into the following markets: Microelectronics, Scientific Research and Government Programs, OEM Components and Instrumentation and Materials Processing.

OUR STRATEGY

We strive to develop innovative and proprietary products and solutions that meet the needs of our customers and that are based on our core expertise in lasers and optical technologies. In pursuit of our strategy, we intend to:

• Leverage our technology portfolio and application engineering to lead the proliferation of photonics into broader markets—We will continue to identify opportunities in which our technology portfolio and application engineering can be used to offer innovative solutions and gain access to new markets. We plan to utilize our expertise to increase our market share in the mid to high power material processing applications.

• Optimize our leadership position in existing markets—There are a number of markets where we have historically been at the forefront of technological development and product deployment and from which we have derived a substantial portion of our revenues. We plan to optimize our financial returns from these markets.

• Maintain and develop additional strong collaborative customer and industry relationships—We believe that the Coherent brand name and reputation for product quality, technical performance and customer satisfaction will help us to further develop our loyal customer base. We plan to maintain our current customer relationships and develop new ones with customers who are industry leaders and work together with these customers to design and develop innovative product systems and solutions as they develop new technologies.

• Develop and acquire new technologies and market share—We will continue to enhance our market position through our existing technologies and develop new technologies through our internal research and development efforts, as well as through the acquisition of additional complementary technologies, intellectual property, manufacturing processes and product offerings.

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• Streamline our manufacturing structure and improve our cost structure—We will focus on optimizing the mix of products that we manufacture internally and externally. We will utilize vertical integration where our internal manufacturing process is considered proprietary and seek to leverage external sources when the capabilities and cost structure are well developed and on a path towards commoditization.

• Focus on long-term improvement of adjusted EBITDA, in dollars and as a percentage of net sales—We define adjusted EBITDA as operating income adjusted for depreciation, amortization, stock compensation expenses, major restructuring costs and certain other non-operating income and expense items. Key initiatives to reach our goals for EBITDA improvements include utilization of our Asian manufacturing locations, rationalizing our supply chain and continued leveraging of our infrastructure.

APPLICATION OF CRITICAL ACCOUNTING POLICIES

Our discussion and analysis of financial condition and results of operations are based upon our condensed consolidated financial statements, which have been prepared in accordance with accounting principles generally accepted in the United States of America and pursuant to the rules and regulations of the SEC. The preparation of these consolidated financial statements requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. We have identified the following as the items that require the most significant judgment and often involve complex estimation: revenue recognition, accounting for long-lived assets (including goodwill and intangible assets), inventory valuation, warranty reserves, stock-based compensation and accounting for income taxes. See Item 7. "Management's Discussion and Analysis of Financial Condition and Results of Operations" in our Annual Report on Form 10-K for our fiscal year ended September 29, 2012.

KEY PERFORMANCE INDICATORS

Below is a summary of some of the quantitative performance indicators (as defined below) that are evaluated by management to assess our financial performance. Some of the indicators are non-GAAP measures and should not be considered as an alternative to any other measure for determining operating performance or liquidity that is calculated in accordance with generally accepted accounting principles.

	Three Months Ended
	December 29, 2012			December 31, 2011			Change			% Change
	(Dollars in thousands)
Bookings	$	175,973		$	201,848		$	(25,875	)	(12.8	)%
Book-to-bill ratio	0.96			1.06			(0.10		)	(9.4	)%
Net sales—Specialty Lasers and Systems	$	131,460		$	135,617		$	(4,157	)	(3.1	)%
Net sales—Commercial Lasers and Components	$	51,742		$	55,150		$	(3,408	)	(6.2	)%
Gross profit as a percentage of net sales— Specialty Lasers and Systems	44.8		%	43.8		%	1.0		%	2.3	%
Gross profit as a percentage of net sales—Commercial Lasers and Components	37.4		%	39.0		%	(1.6		)%	(4.1	)%
Research and development as a percentage of net sales	10.5		%	9.8		%	0.7		%	7.1	%
Income before income taxes	$	19,061		$	25,831		$	(6,770	)	(26.2	)%
Net cash provided by operating activities	$	47,323		$	16,135		$	31,188		193.3	%
Days sales outstanding in receivables	61.9			61.6			0.3			0.5	%
Annualized first quarter inventory turns	2.5			3.0			(0.5		)	(16.7	)%
Capital spending as a percentage of net sales	2.1		%	4.3		%	(2.2		)%	(51.2	)%
Adjusted EBITDA as a percentage of net sales	18.1		%	19.3		%	(1.2		)%	(6.2	)%

Definitions and analysis of these performance indicators are as follows:

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Bookings and Book-to-Bill Ratio

Bookings represent orders expected to be shipped within 12 months and services to be provided pursuant to service contracts. While we generally have not experienced a significant rate of cancellation, bookings are generally cancelable by our customers without substantial penalty and, therefore, we cannot assure all bookings will be converted to net sales.

The book-to-bill ratio is calculated as quarterly bookings divided by quarterly net sales.  This is an indication of the strength of our business but can sometimes be impacted by a single large order. A ratio of greater than 1.0 indicates that demand for our products is greater than what we supply in the quarter.

Bookings decreased 12.8% in the first quarter of fiscal 2013 compared to the same quarter one year ago, with decreases in the microelectronics, scientific and government programs and OEM components and instrumentation markets partially offset by an increase in the materials processing market. Compared to the fourth quarter of fiscal 2012, bookings increased 3.9% led by a significant increase in the advanced packaging market. The book-to-bill ratio was 0.96 in the first quarter of fiscal 2013.

Microelectronics

Microelectronics bookings decreased 21% compared to the same quarter one year ago but increased 19% from bookings in the fourth quarter of fiscal 2012. The book-to-bill ratio for the first quarter of fiscal 2013 was 0.89.

Flat panel display orders in the first quarter of fiscal 2013 increased 10% from orders in the fourth quarter of fiscal 2012 primarily due to higher service orders and upgrades for existing systems. The market remains strong for liquid crystal display (LCD) and active-matrix organic light emitting diode (AMOLED) production from integrators for flat panel display manufacturers in Japan, Korea and China and we expect follow-on orders and continued fluctuations in order volumes on a quarterly basis.

Orders in the advanced packaging (API) market increased 47% from orders in the fourth quarter of fiscal 2012 largely driven by holiday demand for certain smartphones and tablets, leading to increases in high density interconnect (HDI) and flex printed circuit board (PCB) capacity. While a positive development, we believe a broader API segment recovery is still a second half, calendar 2013 event. Products and technologies from Innolight and Lumera will play important roles in advanced packaging applications.

Orders from semiconductor capital equipment OEMs increased 11% from the fourth quarter of fiscal 2012 reflecting strong orders for inspection applications and strong service orders.

Materials Processing

Materials processing orders increased 17% compared to the same quarter one year ago and decreased 6% from the fourth quarter of fiscal 2012. The book-to-bill ratio for the first quarter of fiscal 2013 was 1.01. The first fiscal quarter is typically a seasonally soft quarter in materials processing applications as year-end production needs have already been addressed. Design wins in marking and engraving for consumer electronics manufacturing led to strong bookings for low-power CO₂ lasers and bookings increased for packaging applications in China, again for CO₂ lasers.

We believe the outlook for the next few quarters has improved both due to projected actions by the new Chinese government to stimulate business and the stabilization of the Euro zone. Since the official launch of the Highlight™ 1000FL fiber laser in September 2012, we have received a significant number of inquiries from different OEM customers.

OEM Components and Instrumentation

OEM Components and Instrumentation orders decreased 5% compared to the same quarter one year ago and decreased 19% from the fourth quarter of fiscal 2012. The book-to-bill ratio for the first quarter of fiscal 2013 was 0.93. The decrease from the fourth fiscal quarter was due, in part, to the timing of annual orders in the light show market.

Instrumentation orders were flat compared to the fourth quarter of fiscal 2012 that included a number of large OEM orders. Flow cytometry provided a majority of the bookings and we also received key development orders for gene sequencing applications.

Orders for medical OEM products were 32% lower in the first quarter of fiscal 2013 following strong orders in the fourth quarter of fiscal 2012 for lasers used in refractive surgery. The outlook in this market is strong, with customers signaling

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increased demand. We have also broadened our opportunity through recent acquisitions as Lumera gives us immediate entry into the fast evolving cataract market. The combination of an Innolight product with some of our optical expertise creates a new, low-cost platform for microkeratome work, which has the potential to displace much more complex and costly competitive offerings.

Scientific and Government Programs

Scientific and government programs orders decreased 16% compared to the same quarter one year ago and increased 10% from the fourth quarter of fiscal 2012. The book-to-bill for the first quarter of fiscal 2013 was 1.16.

Record Chameleon™ orders in North America and record amplifier orders in the Pacific Rim led the way for first quarter fiscal 2013 bookings, with Chameleon orders in the U.S. benefitting from a large order from a multi-user R&D center and an order from a manufacturer of multiphoton microscopes. The amplifier orders from the Pacific Rim, which included carryovers from the fourth quarter of fiscal 2012, were geographically diverse and dominated by our Libra™ platform. The Libra is a hands-free system favored by researchers seeking leading performance with minimal user support.

Bookings from European scientific customers were lower than we typically see at the end of the calendar year due to lower spending in Germany and austerity effects in various countries. With respect to one of our recent European acquisitions, Innolight products will modestly contribute to future scientific orders for lasers used in a variety of applications including atom trapping and optical metrology.

Net Sales

Net sales include sales of lasers, laser tools, related accessories and service contracts. Net sales for the first fiscal quarter decreased 3.1% in our SLS segment from the same quarter one year ago and decreased 6.2% in our CLC segment from the same quarter one year ago. For a description of the reasons for changes in net sales refer to the “Results of Operations” section of this quarterly report.

Gross Profit as a Percentage of Net Sales

Gross profit as a percentage of net sales (“gross profit percentage”) is calculated as gross profit for the period divided by net sales for the period.  Gross profit percentage in the first quarter increased from 43.8% to 44.8% in our SLS segment and decreased from 39.0% to 37.4% in our CLC segment from the same quarter one year ago. For a description of the reasons for changes in gross profit refer to the “Results of Operations” section of this quarterly report.

Research and Development as a Percentage of Net Sales

Research and development as a percentage of net sales (“R&D percentage”) is calculated as research and development expense for the period divided by net sales for the period.  Management considers R&D percentage to be an important indicator in managing our business as investing in new technologies is a key to future growth.  R&D percentage increased to 10.5% from 9.8% in our first fiscal quarter compared to the same period one year ago.  For a description of the reasons for changes in R&D spending refer to the “Results of Operations” section of this quarterly report.

Net Cash Provided by Operating Activities

Net cash provided by operating activities as reflected on our Condensed Consolidated Statements of Cash Flows primarily represents the excess of cash collected from billings to our customers and other receipts over cash paid to our vendors for expenses and inventory purchases to run our business.  We believe that cash flows from operations is an important performance indicator because cash generation over the long term is essential to maintaining a healthy business and providing funds to help fuel growth.  For a description of the reasons for changes in Net Cash Provided by Operating Activities refer to the “Liquidity and Capital Resources” section of this quarterly report.

Days Sales Outstanding in Receivables

We calculate days sales outstanding (“DSO”) in receivables as net receivables at the end of the period divided by net sales during the period and then multiplied by the number of days in the period, using 90 days for quarters.  DSO in receivables indicates how well we are managing our collection of receivables, with lower DSO in receivables resulting in higher working capital availability.  The more money we have tied up in receivables, the less money we have available for research and development, acquisitions, expansion, marketing and other activities to grow our business.  Our DSO in receivables for the first

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quarter of fiscal 2013 increased 0.3 days from the same quarter one year ago primarily due to the acquisition of Lumera Laser at the end of the first quarter of fiscal 2013 partially offset by improved collections.

Annualized Inventory Turns

We calculate annualized inventory turns as the cost of sales during the quarter annualized and divided by net inventories at the end of the period. This indicates how well we are managing our inventory levels, with higher inventory turns resulting in more working capital availability and a higher return on our investments in inventory. The more money we have tied up in inventory, the less money we have available for research and development, acquisitions, expansion, marketing and other activities to grow our business. Our annualized inventory turns for the first quarter of fiscal 2013 decreased by 0.5 turns from the same quarter one year ago primarily due to increased long lead-time materials to support a sizable backlog of flat panel laser annealing systems, the impact of decreased sales volumes in relation to inventory levels in certain businesses and the acquisition of Lumera Laser at the end of the first quarter of fiscal 2013.

Capital Spending as a Percentage of Net Sales

Capital spending as a percentage of net sales (“capital spending percentage”) is calculated as capital expenditures for the period divided by net sales for the period.  Capital spending percentage indicates the extent to which we are expanding or improving our operations, including investments in technology and equipment.  Management monitors capital spending levels as this assists management in measuring our cash flows, net of capital expenditures. Our capital spending percentage decreased to 2.1% from 4.3% for the first quarter of fiscal 2013 compared to the same period one year ago primarily due to building improvements and purchases of production-related assets to support our expansion in Asia in fiscal 2012.

Adjusted EBITDA as a Percentage of Net Sales

We define adjusted EBITDA as operating income adjusted for depreciation, amortization, stock compensation expenses, major restructuring costs and certain other non-operating income and expense items. Key initiatives to reach our goals for EBITDA improvements include utilization of our Asian manufacturing locations, rationalizing our supply chain and continued leveraging of our infrastructure.

We utilize a number of different financial measures, both GAAP and non-GAAP, such as adjusted EBITDA as a percentage of net sales, in analyzing and assessing our overall business performance, for making operating decisions and for forecasting and planning future periods. We consider the use of non-GAAP financial measures helpful in assessing our current financial performance and ongoing operations. While we use non-GAAP financial measures as a tool to enhance our understanding of certain aspects of our financial performance, we do not consider these measures to be a substitute for, or superior to, the information provided by GAAP financial measures. We provide adjusted EBITDA in order to enhance investors' understanding of our ongoing operations. This measure is used by some investors when assessing our performance.

Below is the reconciliation of our net income as a percentage of net sales to our adjusted EBITDA as a percentage of net sales:

	Three Months Ended
	December 29, 2012		December 31, 2011
Net income as a percentage of net sales	7.7	%	8.9	%
Income tax expense	2.7	%	4.6	%
Interest and other income (expense), net	1.0	%	(0.2	)%
Depreciation and amortization	4.0	%	3.9	%
Stock based compensation	2.7	%	2.1	%
Adjusted EBITDA as a percentage of net sales	18.1	%	19.3	%

SIGNIFICANT EVENTS

On October 30, 2012, we acquired all of the outstanding shares of Innolight Innovative Laser and Systemtechnik GmbH ("Innolight") for approximately $18.3 million, excluding transaction costs. Innolight provides a core technology building block for an emerging class of commercial, sub-nanosecond lasers for microelectronics manufacturing and its semiconductor-based

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architecture delivers pulsed output that can be amplified by conventional or fiber amplifiers to ultimately deliver infrared, green or ultraviolet light capable of processing a range of materials.

On December 20, 2012, we acquired all of the outstanding shares of Lumera Laser GmbH ("Lumera") for approximately $51.5 million, excluding transaction costs. Lumera is a recognized leader in ultrafast solid state lasers for microelectronics, OEM medical and materials processing applications.

On December 10, 2012, we announced that the Board of Directors approved a $1.00 per share special cash dividend on our outstanding common stock payable on December 27, 2012 to stockholders of record on December 19, 2012, resulting in a payment of $24.0 million.

RESULTS OF OPERATIONS

CONSOLIDATED SUMMARY

The following table sets forth, for the periods indicated, the percentage of total net sales represented by the line items reflected in our condensed consolidated statements of operations:

	Three Months Ended
	December 29, 2012		December 31, 2011
Net sales	100.0	%	100.0	%
Cost of sales	57.6	%	57.9	%
Gross profit	42.4	%	42.1	%
Operating expenses:
Research and development	10.5	%	9.8	%
Selling, general and administrative	20.2	%	18.2	%
Amortization of intangible assets	0.5	%	0.9	%
Total operating expenses	31.2	%	28.9	%
Income from operations	11.2	%	13.2	%
Other income (net)	(0.8	)%	0.3	%
Income before income taxes	10.4	%	13.5	%
Provision for income taxes	2.7	%	4.6	%
Net income	7.7	%	8.9	%

Net income for the first quarter of fiscal 2013 was $14.2 million ($0.58 per diluted share) including $3.5 million of after-tax stock-related compensation expense. Net income for the first quarter of fiscal 2012 was $17.1 million ($0.71 per diluted share) including $2.7 million of after-tax stock-related compensation expense.

NET SALES

Market Application

The following tables set forth, for the periods indicated, the amount of net sales and their relative percentages of total net sales by market application (dollars in thousands):

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	Three Months Ended
	December 29, 2012				December 31, 2011
	Amount		Percentage of total  net sales		Amount		Percentage  of total  net sales
Consolidated:
Microelectronics	$	89,030	48.6	%	$	92,892	48.7	%
OEM components and instrumentation	36,290		19.8	%	35,940		18.8	%
Materials processing	26,519		14.5	%	23,379		12.3	%
Scientific and government programs	31,363		17.1	%	38,556		20.2	%
Total	$	183,202	100.0	%	$	190,767	100.0	%

Net sales for the first quarter of fiscal 2013 decreased by $7.6 million, or 4%, including a decrease of $2.0 million due to the impact of foreign currency exchange rates, compared to the first quarter of fiscal 2012.  Sales decreases in the scientific and government programs and microelectronics markets were partially offset by increases in the materials processing and OEM components and instrumentation markets.

Sales in the scientific and government programs market decreased $7.2 million, or 19%, primarily due to lower demand for advanced research applications used by university and government research groups partly due to lower U.S. and global stimulus funding. We expect that this lower funding level will continue as government policy. The decrease in the microelectronics market of $3.9 million, or 4%, was due to lower shipments for advanced packaging and solar applications partially offset by higher sales in flat panel display applications.Sales in the materials processing market increased $3.1 million, or 13%, primarily due to higher shipments for marking and non-metal cutting applications. The increase in the OEM components and instrumentation market of $0.4 million, or 1%, was due primarily to higher shipments for military and bio-instrumentation applications partially offset by lower shipments for medical applications.

Backlog represents orders which we expect to be shipped within 12 months. Orders used to compute backlog are generally cancelable and subject to rescheduling by our customers without substantial penalties. Historically, we have not experienced a significant rate of cancellation or rescheduling outside the 12 month period, though we cannot guarantee that the rate of cancellations or rescheduling will not increase in the future. We continue to have a sizable backlog of orders, $348.1 million at December 29, 2012, including a significant concentration in the flat panel display market (43%).

The timing for shipments of our higher average selling price excimer products in the flat panel display market can fluctuate from quarter-to-quarter due to customer scheduling, our ability to manufacture these products and/or availability of supplies.  As a result, the timing to convert orders for these products to revenue will likely fluctuate from quarter-to-quarter.

Segments

We are organized into two reportable operating segments: Specialty Lasers and Systems (“SLS”) and Commercial Lasers and Components (“CLC”). SLS develops and manufactures configurable, advanced-performance products largely serving the microelectronics, scientific research and government programs and OEM components and instrumentation markets. CLC focuses on higher volume products that are offered in set configurations. CLC’s primary markets include materials processing, OEM components and instrumentation and microelectronics.

The following tables set forth, for the periods indicated, the amount of net sales and their relative percentages of total net sales by segment (dollars in thousands):

	Three Months Ended
	December 29, 2012				December 31, 2011
	Amount		Percentage of total net sales		Amount		Percentage of total net sales
Consolidated:
Specialty Lasers and Systems (SLS)	$	131,460	71.8	%	$	135,617	71.1	%
Commercial Lasers and Components (CLC)	51,742		28.2	%	55,150		28.9	%
Total	$	183,202	100.0	%	$	190,767	100.0	%

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Net sales for the first quarter of fiscal 2013 decreased by $7.6 million, or 4%, compared to the first quarter of fiscal 2012, with decreases of $4.2 million, or 3%, in our SLS segment and decreases of $3.4 million, or 6%, in our CLC segment.

The decrease in our SLS segment sales was primarily due to lower shipments for scientific and government programs, solar and medical applications partially offset by higher revenue for flat panel display and materials processing applications. The decrease in our CLC segment sales was primarily due to lower advanced packaging and certain flat panel display application sales partially offset by higher instrumentation and military application sales. 

GROSS PROFIT

Consolidated

Our gross profit rate increased to 42.4% in the first quarter of fiscal 2013 from 42.1% in the first quarter of fiscal 2012. The increase in the gross profit rate was primarily due to favorable product margins (0.8%) resulting from favorable product mix in the microelectronics market and the favorable impact of foreign exchange rates net of the impact of lower volumes in several business units serving the advanced packaging, semiconductor and scientific markets. The favorable product margin was partially offset by higher other costs (0.5%) primarily due to higher inventory provisions.

Our gross profit rate has been and will continue to be affected by a variety of factors including market mix, pricing on volume orders, our ability to manufacture advanced and more complex products, manufacturing efficiencies, excess and obsolete inventory write-downs, warranty costs, pricing by competitors or suppliers, new product introductions, production volume, customization and reconfiguration of systems, commodity prices and foreign currency fluctuations, particularly the recent weakening of the Japanese Yen.

Specialty Lasers and Systems

The gross profit rate in our SLS segment increased to 44.8% in the first quarter of fiscal 2013 from 43.8% in the first quarter of fiscal 2012 primarily due to favorable product costs (2.5%) resulting from favorable product mix in the microelectronics market and the favorable impact of foreign exchange rates partially offset by the impact of lower volumes in several business units serving the advanced packaging, semiconductor and scientific markets. The favorable product costs were partially offset by higher other costs (0.9%) due to higher inventory provisions and higher warranty costs (0.6%).

Commercial Lasers and Components

The gross profit rate in our CLC segment decreased to 37.4% in the first quarter of fiscal 2013 from 39.0% in the first quarter of fiscal 2012 primarily due to unfavorable product costs (3.4%) resulting from lower volumes in several business units serving particularly the advanced packaging and components markets and unfavorable product mix within instrumentation and semiconductor markets partially offset by lower warranty costs due to fewer warranty events (1.5%) and lower other costs (0.3%).

OPERATING EXPENSES:

	Three Months Ended
	December 29, 2012				December 31, 2011
	Amount		Percentage of total net sales		Amount		Percentage of total net sales
	(Dollars in thousands)
Research and development	$	19,301	10.5	%	$	18,779	9.8	%
Selling, general and administrative	36,982		20.2	%	34,631		18.2	%
Amortization of intangible assets	854		0.5	%	1,636		0.9	%
Total operating expenses	$	57,137	31.2	%	$	55,046	28.9	%

Research and development

Research and development (“R&D”) expenses increased $0.5 million, or 3%, during the first fiscal quarter ended December 29, 2012 compared to the same quarter one year ago.  The increase was primarily due to lower net reimbursements from customers

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for development projects ($0.4 million), higher other spending on headcount and projects ($0.4 million) and higher stock-related compensation expense ($0.1 million) partially offset by the impact of foreign exchange rates ($0.4 million). On a segment basis as compared to the prior year period, SLS research and development spending increased $0.5 million primarily due to lower net reimbursements from customers for development projects and higher other spending on headcount and projects partially offset by the impact of foreign exchange rates. Both CLC spending and Corporate and other spending were flat.

Selling, general and administrative

Selling, general and administrative (“SG&A”) expenses increased $2.4 million or 7%, during the first fiscal quarter ended December 29, 2012 compared to the same quarter one year ago.  The increase was primarily due to $1.4 million higher payroll spending due to higher headcount and increased salaries and commissions due to mix, $0.8 million higher stock-related compensation expense, $0.5 million higher consulting and legal costs related to acquisitions and $0.3 million higher other variable spending partially offset by the impact of foreign exchange rates ($0.6 million). On a segment basis as compared to the prior year period, SLS segment expenses increased $0.3 million primarily due to higher payroll spending and higher other variable spending partially offset by the impact of foreign exchange rates. CLC spending increased $0.3 million primarily due to higher payroll spending.   Spending for Corporate and other increased $1.8 million primarily due to higher stock-related compensation expense, higher consulting and legal costs related to acquisitions and higher other variable spending.

Amortization of intangible assets

Amortization of intangible assets decreased $0.8 million during the first three months of fiscal 2013 compared to the same period last year primarily due to the completion of amortization of certain intangibles from prior acquisitions partially offset by amortization of intangibles from the acquisition of Innolight in the first quarter of fiscal 2013.

OTHER INCOME (EXPENSE) — NET

Other income, net of other expense, decreased $2.0 million during the three months endedDecember 29, 2012 compared to the same period one year ago. The decrease was primarily due to higher net foreign exchange losses ($2.1 million) due to the significant movement in the Japanese Yen in the last few weeks of the first quarter of fiscal 2013.

INCOME TAXES

The effective tax rate on income before income taxes for the first quarter of fiscal 2013 of 25.7% was lower than the statutory rate of 35% primarily due to permanent differences related to the benefit of income subject to foreign tax rates that are lower than U.S. tax rates, the benefit of foreign tax credits and the benefit of releasing foreign tax reserves accrued under ASC 740-10 (formerly FASB Financial Interpretation No. 48, “Accounting for Uncertainty in Income Taxes”) and related interest. These amounts are partially offset by deemed dividend inclusions under the Subpart F tax rules, stock compensation not deductible for tax purposes and limitations on the deductibility of compensation under IRC Section 162(m).

The effective tax rate for the first quarter of fiscal 2012 of 34.0% was lower than the statutory rate of 35% primarily due to permanent differences related to the benefit of income subject to foreign tax rates that are lower than U.S. tax rates, the benefit of foreign tax credits and the benefit of releasing foreign tax reserves accrued under ASC 740-10 (formerly FASB Financial Interpretation No. 48, “Accounting for Uncertainty in Income Taxes”) and related interest. These amounts are partially offset by deemed dividend inclusions under the Subpart F tax rules, stock compensation not deductible for tax purposes and limitations on the deductibility of compensation under IRC Section 162(m).

DEFERRED INCOME TAXES

As of December 29, 2012, our condensed consolidated balance sheet included net deferred tax assets, before valuation allowance, of approximately $55.2 million, which consists of tax credit carryovers, accruals and reserves, competent authority offset to transfer pricing tax reserves, employee stock-based compensation expenses, and certain other liabilities. Management periodically evaluates the realizability of our net deferred tax assets based on all available evidence, both positive and negative. The realization of net deferred tax assets is solely dependent on our ability to generate sufficient future taxable income in the applicable jurisdictions during periods prior to the expiration of tax statutes to fully utilize these assets.  After evaluating all available evidence, we have determined that it is “more likely than not” that a portion of the deferred tax assets would not be realized and we have a total valuation allowance of $9.1 million as of December 29, 2012. We intend to maintain the valuation allowance until sufficient positive evidence exists to support reversal of the valuation allowance.

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LIQUIDITY AND CAPITAL RESOURCES

At December 29, 2012, we had assets classified as cash and cash equivalents, as well as time deposits and fixed income securities classified as short-term investments, in an aggregate amount of $179.8 million, compared to $224.9 million at September 29, 2012. At December 29, 2012, approximately $119.1 million of this cash and securities was held in certain of our foreign subsidiaries, $48.7 million of which was denominated in currencies other than the U.S. dollar. We currently have approximately $103.5 million of the cash, including investments in U.S. Treasury securities, held by our foreign subsidiaries where we intend to permanently reinvest our accumulated earnings in these entities and our current plans do not demonstrate a need for these funds to support our domestic operations. If, however, a portion of these funds were needed for and distributed to our operations in the United States, we would be subject to additional U.S. income taxes and foreign withholding taxes. The amount of the taxes due would depend on the amount and manner of repatriation, as well as the location from where the funds are repatriated. We actively monitor the third-party depository institutions that hold these assets, primarily focusing on the safety of principal and secondarily maximizing yield on these assets. We diversify our cash and cash equivalents and investments among various financial institutions, money market funds and sovereign debt in order to reduce our exposure should any one of these financial institutions or financial instruments fail or encounter difficulties. To date, we have not experienced any material loss or lack of access to our invested cash, cash equivalents or short-term investments. However, we can provide no assurances that access to our invested cash, cash equivalents or short-term investments will not be impacted by adverse conditions in the financial markets.

Sources and Uses of Cash

Historically, our primary source of cash has been provided by operations. Other sources of cash in the past three fiscal years include proceeds received from the sale of our stock through our employee stock option and purchase plans. Our historical uses of cash have primarily been for the repurchase of our common stock, capital expenditures, acquisitions of businesses and technologies and the payment of a cash dividend in the first quarter of fiscal 2013. Supplemental information pertaining to our historical sources and uses of cash is presented as follows and should be read in conjunction with our condensed consolidated statements of cash flows and the notes to condensed consolidated financial statements:

	Three Months Ended
	December 29, 2012			December 31, 2011
	(in thousands)
Net cash provided by operating activities	$	47,323		$	16,135
Sales of shares under employee stock plans	4,712			4,568
Repurchase of common stock	—			(20,665		)
Cash dividend paid on common stock	(24,040		)	—
Capital expenditures	(3,901		)	(8,139		)
Acquisition of businesses, net of cash acquired	(67,289		)	—

Net cash provided by operating activities increased by $31.2 million for the first three months of fiscal 2013 compared to the same period one year ago. The increase in cash provided by operating activities was primarily due to exceptionally high cash flows from accounts receivable, lower tax payments and lower payments related to other current liabilities and accounts payable. We do not expect favorable increases in cash flows from accounts receivable of this magnitude in the foreseeable future. We believe that our existing cash, cash equivalents and short term investments combined with cash to be provided by operating activities will be adequate to cover our working capital needs and planned capital expenditures for at least the next 12 months to the extent such items are known or are reasonably determinable based on current business and market conditions. However, we may elect to finance certain of our capital expenditure requirements through borrowings under our bank credit facilities or other sources of capital. We continue to follow our strategy to further strengthen our financial position by using available cash flow to fund operations.

We intend to continue pursuing acquisition opportunities at valuations we believe are reasonable based upon market conditions. However, we cannot accurately predict the timing, size and success of our acquisition efforts or our associated potential capital commitments. Furthermore, we cannot assure you that we will be able to acquire businesses on terms acceptable to us. We expect to fund future acquisitions through existing cash balances and cash flows from operations. If required, we will look for additional borrowings or consider the issuance of securities. The extent to which we will be willing or able to use our common stock to make acquisitions will depend on its market value at the time and the willingness of potential sellers to accept it as full or partial payment.

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On December 10, 2012, we announced that the Board of Directors approved a $1.00 per share special cash dividend on our outstanding common stock payable on December 27, 2012 to stockholders of record on December 19, 2012, resulting in a payment of $24.0 million in the first quarter of fiscal 2013. We do not expect to pay any additional dividends in the foreseeable future.

On August 25, 2011, the Board of Directors authorized the repurchase of up to $50.0 million of our common stock. The program was authorized for 12 months from the date of authorization. During fiscal 2011, we repurchased and retired 586,200 shares of outstanding common stock at an average price of $42.67 per share for a total of $25.0 million, excluding expenses. During the fiscal 2012, we repurchased and retired 543,200 shares of outstanding common stock at an average price of $45.99 per share for a total of $25.0 million, excluding expenses, completing the repurchase. On October 4, 2012, the Board of Directors authorized the repurchase of up to $25.0 million of our common stock. No repurchases were made in the first quarter of fiscal 2013.

Additional sources of cash available to us were domestic and international currency lines of credit and bank credit facilities totaling $65.8 million as of December 29, 2012, of which $63.5 million was unused and available. These unsecured credit facilities were used in Europe during the first three months of fiscal 2013. Our domestic line of credit consists of a $50 million unsecured revolving credit account with Union Bank of California, which expires on May 31, 2014 and is subject to covenants related to financial ratios and tangible net worth. No amounts have been drawn upon our domestic line of credit and $2.3 million of the international currency lines has been used as guarantees as of December 29, 2012.

Our ratio of current assets to current liabilities was 3.5:1 at December 29, 2012 compared to 4.0:1 at September 29, 2012. The decrease in our ratio is primarily due to decreases in cash and short-term investments and accounts receivable. Our cash and cash equivalents, short-term investments, working capital and debt obligations are as follows:

	December 29, 2012		September 29, 2012
	(in thousands)
Cash and cash equivalents	$	87,996	$	67,761
Short-term investments	91,781		157,168
Working capital	392,912		460,697
Total debt obligations	15		19

Contractual Obligations and Off-Balance Sheet Arrangements

We have no off-balance sheet arrangements as defined under Regulation S-K of the Securities Act of 1933. Information regarding our long-term debt payments, operating lease payments, asset retirement obligations, purchase commitments with suppliers and purchase obligations is provided in Item 7 “Management’s Discussion and Analysis of Financial Condition and Results of Operations” of our Annual Report on Form 10-K for the fiscal year ended September 29, 2012. There have been no material changes in contractual obligations outside of the ordinary course of business since September 29, 2012. Information regarding our other financial commitments at December 29, 2012 is provided in the notes to the condensed consolidated financial statements in this filing.

Changes in Financial Condition

Cash provided by operating activities during the first three months of fiscal 2013 was $47.3 million, which included cash provided by operating assets and liabilities of $20.6 million, net income of $14.2 million, depreciation and amortization of $7.3 million, stock-based compensation expense of $5.0 million and $0.2 million other.

Cash used in investing activities during the first three months of fiscal 2013 was $6.3 million, which included $67.3 million used to acquire Lumera and Innolight and $3.9 million used to acquire property and equipment and improve buildings partially offset by $64.9 million net sales of available-for-sale securities.

Cash used by financing activities during the first three months of fiscal 2013 was $23.4 million, which included a $24.0 million cash dividend on our common stock and $4.1 million other partially offset by $4.7 million generated from our employee stock option and stock purchase plans.

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Changes in exchange rates during the first three months of fiscal 2013 increased our cash balances by $2.6 million.

RECENT ACCOUNTING STANDARDS

See Note 2. “Recent Accounting Standards” in the Notes to Condensed Consolidated Financial Statements for a full description of recent accounting pronouncements, including the respective dates of adoption or expected adoption and effects on our condensed consolidated financial position, results of operations and cash flows.

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ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Market risk disclosures

We are exposed to market risk related to changes in interest rates and foreign currency exchange rates. We do not use derivative financial instruments for speculative or trading purposes.

Interest rate sensitivity

A portion of our investment portfolio is composed of fixed income securities. These securities are subject to interest rate risk and will fall in value if market interest rates increase. If market interest rates were to increase immediately (whether due to changes in overall market rates or credit worthiness of the issuers of our individual securities) and uniformly by 10% from levels at December 29, 2012, the fair value of the portfolio, based on quoted market prices in active markets involving similar assets, would decline by an immaterial amount due to their short-term maturities. We have the ability to generally hold our fixed income investments until maturity and therefore we would not expect our operating results or cash flows to be affected to any significant degree by the effect of a sudden change in market interest rates on our securities portfolio. If necessary, we may sell short-term investments prior to maturity to meet our liquidity needs.

At December 29, 2012, the fair value of our available-for-sale debt securities was $89.8 million, all of which were classified as short-term investments.  Gross unrealized gains and losses on available-for-sale debt securities were $441,000 and $(1,000), respectively, at December 29, 2012.

Foreign currency exchange risk

We maintain operations in various countries outside of the United States and have foreign subsidiaries that manufacture and sell our products in various global markets. The majority of our sales are transacted in U.S. dollars. However, we do generate revenues in other currencies, primarily the Japanese Yen, the Euro and the Korean Won. As a result, our earnings, cash flows and cash balances are exposed to fluctuations in foreign currency exchange rates. We attempt to limit these exposures through financial market instruments. We utilize derivative instruments, primarily forward contracts with maturities of two months or less, to manage our exposure associated with anticipated cash flows and net asset and liability positions denominated in foreign currencies. Gains and losses on the forward contracts are mitigated by gains and losses on the underlying instruments. We do not use derivative financial instruments for trading purposes.

We do not anticipate any material adverse effect on our consolidated financial position, results of operations or cash flows resulting from the use of these instruments. There can be no assurance that these strategies will be effective or that transaction losses can be minimized or forecasted accurately. If a financial counterparty to any of our hedging arrangements experiences financial difficulties or is otherwise unable to honor the terms of the foreign currency hedge, we may experience material financial losses. In the current economic environment, the risk of failure of a financial party remains high.

At December 29, 2012, approximately $119.1 million of our cash, cash equivalents and short-term investments were held in certain of our foreign subsidiaries, $48.7 million of which was denominated in currencies other than the U.S. dollar.

A hypothetical 10% change in foreign currency rates on our forward contracts would not have a material impact on our results of operations, cash flows or financial position.

The following table provides information about our foreign exchange forward contracts at December 29, 2012. The table presents the weighted average contractual foreign currency exchange rates, the value of the contracts in U.S. dollars at the contract exchange rate as of the contract maturity date and fair value. The U.S. notional fair value represents the contracted amount valued at December 29, 2012 rates.

Forward contracts to sell (buy) foreign currencies for U.S. dollars (in thousands, except contract rates):

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	Average Contract Rate	U.S. Notional Contract Value			U.S. Notional Fair Value
Euro	1.2990	$	(65,490	)	$	(66,543	)
Japanese Yen	82.3751	$	10,009		$	9,822
British Pound	1.6092	$	867		$	874
Korean Won	1,077.6500	$	26,058		$	26,106
Chinese Renminbi	6.2890	$	10,702		$	10,795
Singapore Dollar	1.2210	$	2,744		$	2,744

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ITEM 4. CONTROLS AND PROCEDURES

Management’s Evaluation of Disclosure Controls and Procedures

We have evaluated the effectiveness of the design and operation of our disclosure controls and procedures; as such term is defined in Rule 13a-15(e) under the Securities Exchange Act of 1934, as of December 29, 2012 (“Evaluation Date”).  The controls evaluation was conducted under the supervision and with the participation of management, including our Chief Executive Officer and Chief Financial Officer.  Based on this evaluation, our Chief Executive Officer and Chief Financial Officer concluded as of the Evaluation Date that our disclosure controls and procedures were effective in providing reasonable assurance that information required to be disclosed by us in reports that we file or submit under the Securities Exchange Act of 1934, as amended, is (i) recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission’s rules and forms and (ii) accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosures.

Changes in Internal Control over Financial Reporting

There was no change in our internal control over financial reporting that occurred during the quarter ended December 29, 2012 that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

Inherent Limitations over Internal Control

Internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles ("GAAP"). Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate. Our internal control over financial reporting is designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with GAAP. Our internal control over financial reporting includes those policies and procedures that:

(i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of our assets;

(ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that our receipts and expenditures are being made only in accordance with authorizations of our management and directors; and

(iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of our assets that could have a material effect on the financial statements.

Management, including our Chief Executive Officer and Chief Financial Officer, does not expect that our internal controls will prevent or detect all errors and all fraud. A control system, no matter how well designed and operated, can provide only reasonable, not absolute, assurance that the objectives of the control system are met. Further, the design of a control system must reflect the fact that there are resource constraints, and the benefits of controls must be considered relative to their costs. Because of the inherent limitations in all control systems, no evaluation of internal controls can provide absolute assurance that all control issues and instances of fraud, if any, have been detected. Also, any evaluation of the effectiveness of controls in future periods are subject to the risk that those internal controls may become inadequate because of changes in business conditions, or that the degree of compliance with the policies or procedures may deteriorate.

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PART II. OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

We are subject to legal claims and litigation arising in the ordinary course of business, such as product liability, employment or intellectual property claims, including, but not limited to, the matters described below. The outcome of any such matters is currently not determinable. Although we do not expect that such legal claims and litigation will ultimately have a material adverse effect on our consolidated financial position or results of operations, an adverse result in one or more matters could negatively affect our results in the period in which they occur.

Income Tax Audits

We are subject to taxation and file income tax returns in the U.S. federal jurisdiction and in many state and foreign jurisdictions. For U.S. federal income tax purposes, all years prior to 2009 are closed to examination. In our major state jurisdiction and our major foreign jurisdictions, the years prior to 2008 and 2006, respectively, are closed to examination. In December 2011 and January 2012, our three German subsidiaries received notices of tax audits for the fiscal years 2006 through 2010. These audits are currently in process.

Management believes that it has adequately provided for any adjustments that may result from tax examinations. The Company regularly engages in discussions and negotiations with tax authorities regarding tax matters in various jurisdictions. It is reasonably possible that certain federal, foreign and state tax matters may be concluded in the next 12 months. Although the timing of the resolution and/or closure of audits is highly uncertain, it is reasonably possible that the balance of net unrecognized tax benefits including interest and penalties at December 29, 2012 could be reduced by approximately $0.2 million to $2.4 million in the next 12 months.

ITEM 1A. RISK FACTORS

You should carefully consider the followings risks when considering an investment in our Common Stock. These risks could materially affect our business, results of operations or financial condition, cause the trading price of our Common Stock to decline materially or cause our actual results to differ materially from those expected or those expressed in any forward-looking statements made by us. These risks are not exclusive, and additional risks to which we are subject include, but are not limited to, the factors mentioned under “Forward-Looking Statements” and the risk of our businesses described elsewhere in this annual report. Additionally, these risks and uncertainties described herein are not the only ones facing us. Other events that we do not currently anticipate or that we currently deem immaterial also may affect our business, results of operations or financial conditions.

BUSINESS ENVIRONMENT AND INDUSTRY TRENDS

Risks Associated with Our Industry, Our Business and Market Conditions

Our operating results, including net sales, net income (loss) and adjusted EBITDA in dollars and as a percentage of net sales, as well as our stock price have varied in the past, and our future operating results will continue to be subject to quarterly and annual fluctuations based upon numerous factors, including those discussed in this Item 1A and throughout this report. Our stock price will continue to be subject to daily variations as well. Our future operating results and stock price may not follow any past trends or meet our guidance and expectations.

Our net sales and operating results, such as adjusted EBITDA percentage, net income (loss) and operating expenses, and our stock price have varied in the past and may vary significantly from quarter to quarter and from year to year in the future. We believe a number of factors, many of which are outside of our control, could cause these variations and make them difficult to predict, including:

• general economic uncertainties in the macroeconomic and local economies facing us, our customers and the markets we serve;

• fluctuations in demand for our products or downturns in the industries that we serve;

• the ability of our suppliers, both internal and external, to produce and deliver components and parts, including sole or limited source components, in a timely manner, in the quantity, quality and prices desired;

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• the timing of conversion of bookings to revenue;

• the concentration of a significant amount of our backlog with a few customers;

• cancellation of customer orders and rescheduling of shipments;

• fluctuations in our product mix;

• the ability of our customers' other suppliers to provide sufficient material to support our customers' products;

• currency fluctuations and stability, in particular the Euro, the Japanese Yen, the Korean Won, the Chinese Renminbi and the US dollar as compared to other currencies;

• commodity pricing;

• introductions of new products and product enhancements by our competitors, entry of new competitors into our markets, pricing pressures and other competitive factors;

• our ability to develop, introduce, manufacture and ship new and enhanced products in a timely manner without defects;

• our ability to manage our capacity and that of our suppliers;

• our increased reliance on contract manufacturing;

• the rate of market acceptance of our new products;

• the ability of our customers to pay for our products;

• expenses associated with acquisition-related activities;

• seasonal sales trends;

• access to applicable credit markets by us, our customers and their end customers;

• delays or reductions in customer purchases of our products in anticipation of the introduction of new and enhanced products by us or our competitors;

• our ability to control expenses;

• the level of capital spending of our customers;

• potential excess and/or obsolescence of our inventory;

• costs and timing of adhering to current and developing governmental regulations and reviews relating to our products and business;

• costs related to acquisitions of technology or businesses;

• impairment of goodwill, intangible assets and other long-lived assets;

• our ability to meet our expectations and forecasts and those of public market analysts and investors;

• the availability of research funding by governments with regard to our customers in the scientific business, such as universities;

• continued government spending on defense-related projects where we are a subcontractor;

• maintenance of supply relating to products sold to the government on terms which we would prefer not to accept;

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• changes in policy, interpretations, or challenges to the allowability of costs incurred under government cost accounting standards;

• damage to our reputation as a result of coverage in social media, Internet blogs or other media outlets;

• managing our and other parties' compliance with contracts in multiple languages and jurisdictions;

• managing our internal and third party sales representatives and distributors, including compliance with all applicable laws;

• impact of government economic policies on macroeconomic conditions;

• costs and expenses from litigation;

• costs associated with designing around or payment of licensing fees associated with issued patents in our fields of business;

• government support of the alternative energy industries, such as solar;

• the future impact of legislation, rulemaking, and changes in accounting, tax, defense procurement, or export policies; and

• distraction of management related to acquisition or divestment activities.

In addition, we often recognize a substantial portion of our sales in the last month of our fiscal quarters. Our expenses for any given quarter are typically based on expected sales and if sales are below expectations in any given quarter, the adverse impact of the shortfall on our operating results may be magnified by our inability to adjust spending quickly enough to compensate for the shortfall. We also base our manufacturing on our forecasted product mix for the quarter. If the actual product mix varies significantly from our forecast, we may not be able to fill some orders during that quarter, which would result in delays in the shipment of our products. Accordingly, variations in timing of sales, particularly for our higher priced, higher margin products, can cause significant fluctuations in quarterly operating results.

Due to these and other factors, such as varying product mix, we believe that quarter-to-quarter and year-to-year comparisons of our historical operating results may not be meaningful. You should not rely on our results for any quarter or year as an indication of our future performance. Our operating results in future quarters and years may be below public market analysts' or investors' expectations, which would likely cause the price of our stock to fall. In addition, over the past several years, the stock market has experienced extreme price and volume fluctuations that have affected the stock prices of many technology companies both in and outside our industry. There has not always been a direct correlation between this volatility and the performance of particular companies subject to these stock price fluctuations. Further, over the last twelve months, equity markets around the world have significantly fluctuated across most sectors. These factors, as well as general economic and political conditions or investors' concerns regarding the credibility of corporate financial statements, may have a material adverse effect on the market price of our stock in the future.

We are exposed to risks associated with worldwide economic conditions and related uncertainties which could negatively impact demand for our products and results of operations.

Volatility and disruption in the capital and credit markets, depressed consumer confidence, government economic policies, negative economic conditions, volatile corporate profits and reduced capital spending could negatively impact demand for our products. In particular, it is difficult to develop and implement strategy, sustainable business models and efficient operations, as well as effectively manage supply chain relationships in the face of such conditions including uncertainty regarding the ability of some of our suppliers to continue operations and provide us with uninterrupted supply flow. Our ability to maintain our research and development investments in our broad product offerings may be adversely impacted in the event that our sales decline and do not increase in the future. Spending and the timing thereof by consumers and businesses has a significant impact on our results and, where such spending is delayed or canceled, it could have a material negative impact on our operating results. The current global economic conditions remain uncertain and challenging. Weakness in our end markets could negatively impact our revenue, gross margin and operating expenses, and consequently have a material adverse effect on our business, financial condition and results of operations.

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Continued uncertainty in U.S. and global fiscal policy has likely had a recent adverse impact on global financial markets and overall economic activity. Should this uncertain financial policy continue, it would likely negatively impact global economic activity, including possibly sending the U.S. into a new recession. It would also likely have negative repercussions on U.S. and global credit and financial markets, and further exacerbate sovereign debt concerns in the European Union.  All of these factors would likely adversely impact the global demand for our products and the performance of our investments, and would likely have a material adverse effect on our business, results of operations and financial condition.

The financial turmoil which recently affected the banking system and financial markets continues to negatively impact financial institutions and has resulted in tighter credit markets, and lower levels of liquidity in some financial markets. There could be a number of follow-on effects from the tightened credit environment on our business, including the insolvency of key suppliers or their inability to obtain credit to finance development and/or manufacture products resulting in product delays; inability of customers to obtain credit to finance purchases of our products and/or customer insolvencies; and failure of financial institutions negatively impacting our treasury functions. In the event our customers are unable to obtain credit or otherwise pay for our shipped products it could significantly impact our ability to collect on our outstanding accounts receivable. Other income and expense also could vary materially from expectations depending on gains or losses realized on the sale or exchange of financial instruments; impairment charges resulting from revaluations of debt and equity securities and other investments; interest rates; cash balances; and changes in fair value of derivative instruments. Volatility in the financial markets and any overall economic uncertainty increase the risk that the actual amounts realized in the future on our financial instruments could differ significantly from the fair values currently assigned to them. Uncertainty about current global economic conditions could also continue to increase the volatility of our stock price.

In addition, political and social turmoil related to international conflicts, terrorist acts and civil unrest may put further pressure on economic conditions in the United States and abroad. Unstable economic, political and social conditions make it difficult for our customers, our suppliers and us to accurately forecast and plan future business activities. If such conditions persist, our business, financial condition and results of operations could suffer. Additionally, unstable economic conditions can provide significant pressures and burdens on individuals, which could cause them to engage in inappropriate business conduct. See “Part I, Item 4. CONTROLS AND PROCEDURES.”

We depend on sole source or limited source suppliers, both internal and external, for some of our key components and materials, including exotic materials, certain cutting-edge optics and crystals, in our products, which make us susceptible to supply shortages or price fluctuations that could adversely affect our business.

We currently purchase several key components and materials used in the manufacture of our products from sole source or limited source suppliers, both internal and external. Our failure to timely receive these key components and materials, such as the large optics used in our flat panel display manufacturing applications, could cause delays in the shipment of our products. Some of these suppliers are relatively small private companies that may discontinue their operations at any time and which may be particularly susceptible to prevailing economic conditions. Some of our suppliers are located in regions which may be susceptible to natural disasters, such as the flooding in Thailand and the earthquake, tsunami and resulting nuclear disaster in Japan in recent years and last year's severe flooding and power loss in the Eastern part of the United States. We typically purchase our components and materials through purchase orders or agreed upon terms and conditions and we do not have guaranteed supply arrangements with many of these suppliers. Some of our products, particularly in the flat panel display industry, require designs and specifications which are at the cutting-edge of available technologies. Our and our customers' designs and specifications frequently change to meet rapidly evolving market demands. Accordingly certain of our products require components and supplies which may be technologically difficult and unpredictable to manufacture. These characteristics further pressure the timely delivery of such components. We may fail to obtain these supplies in a timely manner in the future. We may experience difficulty identifying alternative sources of supply for certain components used in our products and may have to incur expenses and management distraction in assisting our current and future suppliers to meet our and our customers' technical requirements. We would experience further delays while identifying, evaluating and testing the products of these potential alternative suppliers. Furthermore, financial or other difficulties faced by these suppliers or significant changes in demand for these components or materials could limit their availability. We continue to consolidate our supply base and move supplier locations. When we transition locations we may increase our inventory of such products as a “safety stock” during the transition, which may cause the amount of inventory reflected on our balance sheet to increase. Additionally, many of our customers rely on sole source suppliers. In the event of a disruption of our customers' supply chain, orders from our customers could decrease or be delayed.

Any interruption or delay in the supply of any of these components or materials, or the inability to obtain these components and materials from alternate sources at acceptable prices and within a reasonable amount of time, or our failure to properly manage these moves, would impair our ability to meet scheduled product deliveries to our customers and could cause customers to cancel orders. We have historically relied exclusively on our own production capability to manufacture certain strategic

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components, crystals, semiconductor lasers, lasers and laser-based systems. Because we manufacture, package and test these components, products and systems at our own facilities, and such components, products and systems are not readily available from other sources, any interruption in manufacturing would adversely affect our business. In addition, our failure to achieve adequate manufacturing yields of these items at our manufacturing facilities may materially and adversely affect our operating results and financial condition.

We participate in the microelectronics market, which requires significant research and development expenses to develop and maintain products and a failure to achieve market acceptance for our products could have a significant negative impact on our business and results of operations.

The microelectronics market is characterized by rapid technological change, frequent product introductions, the volatility of product supply and demand, changing customer requirements and evolving industry standards. The nature of this market requires significant research and development expenses to participate, with substantial resources invested in advance of material sales of our products to our customers in this market. Additionally, our product offerings may become obsolete given the frequent introduction of alternative technologies. In the event either our customers' or our products fail to gain market acceptance, or the microelectronics market fails to grow, it would likely have a significant negative effect on our business and results of operations.

We participate in the flat panel display market, which has a relatively limited number of end customer manufacturers.  Our backlog, timing of revenues and results of operations could be negatively impacted in the event our customers reschedule orders.

In the flat panel display market, there are a relatively limited number of manufacturers who are the end customers for our annealing products.  Given macroeconomic conditions, varying consumer demand and technical process limitations at manufacturers, our customers may seek to reschedule or cancel orders. Challenges in meeting evolving technological requirements for these complex products by us and our suppliers could also result in delays in shipments, rescheduled or canceled orders by our customers. This could negatively impact our backlog, timing of revenues and results of operations. 

Some of our laser systems are complex in design and may contain defects that are not detected until deployed by our customers, which could increase our costs and reduce our revenues.

Lasers and laser systems are inherently complex in design and require ongoing regular maintenance. The manufacture of our lasers, laser products and systems involves a highly complex and precise process. As a result of the technological complexity of our products, in particular the flat panel annealing systems, changes in our or our suppliers' manufacturing processes or the inadvertent use of defective materials by us or our suppliers could result in a material adverse effect on our ability to achieve acceptable manufacturing yields and product reliability. To the extent that we do not achieve and maintain our projected yields or product reliability, our business, operating results, financial condition and customer relationships would be adversely affected. We provide warranties on a majority of our product sales, and reserves for estimated warranty costs are recorded during the period of sale. The determination of such reserves requires us to make estimates of failure rates and expected costs to repair or replace the products under warranty. We typically establish warranty reserves based on historical warranty costs for each product line. If actual return rates and/or repair and replacement costs differ significantly from our estimates, adjustments to cost of sales may be required in future periods which could have an adverse effect on our results of operations.

Our customers may discover defects in our products after the products have been fully deployed and operated under the end user's peak stress conditions. In addition, some of our products are combined with products from other vendors, which may contain defects. As a result, should problems occur, it may be difficult to identify the source of the problem. If we are unable to identify and fix defects or other problems, we could experience, among other things:

• loss of customers or orders;

• increased costs of product returns and warranty expenses;

• damage to our brand reputation;

• failure to attract new customers or achieve market acceptance;

• diversion of development and engineering resources; and

• legal actions by our customers and/or their end users.

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The occurrence of any one or more of the foregoing factors could seriously harm our business, financial condition and results of operations.

Continued volatility in the semiconductor manufacturing industry could adversely affect our business, financial condition and results of operations.

A portion of our net sales in the microelectronics market depend on the demand for our products by semiconductor equipment companies. The semiconductor market has historically been characterized by sudden and severe cyclical variations in product supply and demand, which have often severely affected the demand for semiconductor manufacturing equipment, including laser-based tools and systems. The timing, severity and duration of these market cycles are difficult to predict, and we may not be able to respond effectively to these cycles. The continuing uncertainty in this market severely limits our ability to predict our business prospects or financial results in this market.

During industry downturns, our revenues from this market may decline suddenly and significantly. Our ability to rapidly and effectively reduce our cost structure in response to such downturns is limited by the fixed nature of many of our expenses in the near term and by our need to continue our investment in next-generation product technology and to support and service our products. In addition, due to the relatively long manufacturing lead times for some of the systems and subsystems we sell to this market, we may incur expenditures or purchase raw materials or components for products we cannot sell. Accordingly, downturns in the semiconductor capital equipment market may materially harm our operating results. Conversely, when upturns in this market occur, we must be able to rapidly and effectively increase our manufacturing capacity to meet increases in customer demand that may be extremely rapid, and if we fail to do so we may lose business to our competitors and our relationships with our customers may be harmed.

Our cash and cash equivalents and short-term investments are managed through various banks around the world and volatility in the capital and credit market conditions could cause financial institutions to fail or materially harm service levels provided by such banks, both of which could have an adverse affect on our ability to timely access funds.

World capital and credit markets have been and may continue to experience volatility and disruption. In some cases, the markets have exerted downward pressure on stock prices and credit capacity for certain issuers, as well as pressured the solvency of some financial institutions. These financial institutions, including banks, have had difficulty timely performing regular services and in some cases have failed or otherwise been largely taken over by governments. We maintain our cash, cash equivalents and short-term investments with a number of financial institutions around the world. Should some or all of these financial institutions fail or otherwise be unable to timely perform requested services, we would likely have a limited ability to timely access our cash deposited with such institutions, or, in extreme circumstances the failure of such institutions could cause us to be unable to access cash for the foreseeable future. If we are unable to quickly access our funds when we need them, we may need to increase the use of our existing credit lines or access more expensive credit, if available. If we are unable to access our cash or if we access existing or additional credit or are unable to access additional credit, it could have a negative impact on our operations, including our reported net income.

We are exposed to credit risk and fluctuations in the market values of our investment portfolio.

Although we have not recognized any material losses on our cash, cash equivalents and short-term investments, future declines in their market values could have a material adverse effect on our financial condition and operating results. Given the global nature of our business, we have investments both domestically and internationally. There has recently been growing pressure on the creditworthiness of sovereign nations, particularly in Europe where a significant portion of our cash, cash equivalents and short-term investments are invested, which results in corresponding pressure on the valuation of the securities issued by such nations. Additionally, our overall investment portfolio is often concentrated in certificates of deposit and money market funds. We maintain a mix of government-issued securities. Credit ratings and pricing of these investments can be negatively impacted by liquidity, credit deterioration or losses, financial results, or other factors. Additionally, liquidity issues or political actions by sovereign nations could result in decreased values for our investments in certain government securities. As a result, the value or liquidity of our cash, cash equivalents and short-term investments could decline or become materially impaired, which could have a material adverse effect on our financial condition and operating results. See “Item 3. Quantitative and Qualitative Disclosures about Market Risk.”

Our future success depends on our ability to increase our sales volumes and decrease our costs to offset potential declines in the average selling prices (“ASPs”) of our products and, if we are unable to realize greater sales volumes and lower costs, our operating results may suffer.

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Our ability to increase our sales volume and our future success depends on the continued growth of the markets for lasers, laser systems and related accessories, as well as our ability to identify, in advance, emerging markets for laser-based systems. We cannot assure you that we will be able to successfully identify, on a timely basis, new high-growth markets in the future. Moreover, we cannot assure you that new markets will develop for our products or our customers' products, or that our technology or pricing will enable such markets to develop. Future demand for our products is uncertain and will depend to a great degree on continued technological development and the introduction of new or enhanced products. If this does not continue, sales of our products may decline and our business will be harmed.

We have in the past experienced decreases in the ASPs of some of our products. As competing products become more widely available, the ASPs of our products may decrease. If we are unable to offset any decrease in our ASPs by increasing our sales volumes, our net sales will decline. In addition, to maintain our gross margins, we must continue to reduce the cost of manufacturing our products while maintaining their high quality. From time to time, our products, like many complex technological products, may fail in greater frequency than anticipated. This can lead to further charges, which can result in higher costs, lower gross margins and lower operating results. Furthermore, as ASPs of our current products decline, we must develop and introduce new products and product enhancements with higher margins. If we cannot maintain our gross margins, our operating results could be seriously harmed, particularly if the ASPs of our products decrease significantly.

Our future success depends on our ability to develop and successfully introduce new and enhanced products that meet the needs of our customers.

Our current products address a broad range of commercial and scientific research applications in the photonics markets. We cannot assure you that the market for these applications will continue to generate significant or consistent demand for our products. Demand for our products could be significantly diminished by disrupting technologies or products that replace them or render them obsolete. Furthermore, the new and enhanced products in certain markets generally continue to be smaller in size and have lower ASPs, and therefore, we have to sell more units to maintain revenue levels. Accordingly, we must continue to invest in research and development in order to develop competitive products.

Our future success depends on our ability to anticipate our customers' needs and develop products that address those needs. Introduction of new products and product enhancements will require that we effectively transfer production processes from research and development to manufacturing and coordinate our efforts with those of our suppliers to achieve volume production rapidly. If we fail to transfer production processes effectively, develop product enhancements or introduce new products in sufficient quantities to meet the needs of our customers as scheduled, our net sales may be reduced and our business may be harmed.

We face risks associated with our foreign operations and sales that could harm our financial condition and results of operations.

For the three months endedDecember 29, 2012, 74% of our net sales were derived from customers outside of the United States. For fiscal 2012, fiscal 2011 and fiscal 2010, 76%, 74%, and 67%, respectively, of our net sales were derived from customers outside of the United States. We anticipate that foreign sales, particularly in Asia, will continue to account for a significant portion of our revenues in the foreseeable future.

A global economic slowdown or a natural disaster could have a negative effect on various foreign markets in which we operate, such as the earthquake, tsunami and resulting nuclear disaster during fiscal 2011 in Japan and last year's flooding in Thailand. Such a slowdown may cause us to reduce our presence in certain countries, which may negatively affect the overall level of business in such countries. Our foreign sales are primarily through our direct sales force. Additionally, some foreign sales are made through foreign distributors and resellers. Our foreign operations and sales are subject to a number of risks, including:

• longer accounts receivable collection periods;

• the impact of recessions and other economic conditions in economies outside the United States;

• unexpected changes in regulatory requirements;

• certification requirements;

• environmental regulations;

• reduced protection for intellectual property rights in some countries;

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• potentially adverse tax consequences;

• political and economic instability;

• import/export regulations, tariffs and trade barriers;

• compliance with applicable United States and foreign anti-corruption laws;

• cultural and management differences;

• preference for locally produced products; and

• shipping and other logistics complications.

Our business could also be impacted by international conflicts, terrorist and military activity, civil unrest and pandemic illness which could cause a slowdown in customer orders or cause customer order cancellations.

We are also subject to the risks of fluctuating foreign currency exchange rates, which could materially adversely affect the sales price of our products in foreign markets, as well as the costs and expenses of our foreign subsidiaries. While we use forward exchange contracts and other risk management techniques to hedge our foreign currency exposure, we remain exposed to the economic risks of foreign currency fluctuations.

We may not be able to protect our proprietary technology which could adversely affect our competitive advantage.

Maintenance of intellectual property rights and the protection thereof is important to our business. We rely on a combination of patent, copyright, trademark and trade secret laws and restrictions on disclosure to protect our intellectual property rights. We cannot assure you that our patent applications will be approved, that any patents that may be issued will protect our intellectual property or that any issued patents will not be challenged by third parties. Other parties may independently develop similar or competing technology or design around any patents that may be issued to us. We cannot be certain that the steps we have taken will prevent the misappropriation of our intellectual property, particularly in foreign countries where the laws may not protect our proprietary rights as fully as in the United States. Further, we may be required to enforce our intellectual property or other proprietary rights through litigation, which, regardless of success, could result in substantial costs and diversion of management's attention. Additionally, there may be existing patents of which we are unaware that could be pertinent to our business and it is not possible for us to know whether there are patent applications pending that our products might infringe upon since these applications are often not publicly available until a patent is issued or published.

We may, in the future, be subject to claims or litigation from third parties, for claims of infringement of their proprietary rights or to determine the scope and validity of our proprietary rights or the proprietary rights of competitors or other rights holders. These claims could result in costly litigation and the diversion of our technical and management personnel. Adverse resolution of litigation may harm our operating results or financial condition.

In recent years, there has been significant litigation in the United States involving patents and other intellectual property rights. This has been seen in our industry, for example in the recently concluded patent-related litigation between IMRA America, Inc. and IPG Photonics Corporation. From time to time, like many other technology companies, we have received communications from other parties asserting the existence of patent rights, copyrights, trademark rights or other intellectual property rights which such third parties believe may cover certain of our products, processes, technologies or information. In the future, we may be a party to litigation to protect our intellectual property or as a result of an alleged infringement of others' intellectual property whether through direct claims or by way of indemnification claims of our customers, as, in some cases, we contractually agree to indemnify our customers against third-party infringement claims relating to our products. These claims and any resulting lawsuit, if successful, could subject us to significant liability for damages or invalidation of our proprietary rights. These lawsuits, regardless of their success, would likely be time-consuming and expensive to resolve and would divert management time and attention. Any potential intellectual property litigation could also force us to do one or more of the following:

• stop manufacturing, selling or using our products that use the infringed intellectual property;

• obtain from the owner of the infringed intellectual property right a license to sell or use the relevant technology, although such license may not be available on reasonable terms, or at all; or

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• redesign the products that use the technology.

If we are forced to take any of these actions or are otherwise a party to lawsuits of this nature, we may incur significant losses for which we do not have insurance and our business may be seriously harmed. We do not have insurance to cover potential claims of this type.

If our goodwill or intangible assets become impaired, we may be required to record a significant charge to earnings.

Under accounting principles generally accepted in the United States, we review our intangible assets for impairment when events or changes in circumstances indicate the carrying value may not be recoverable. Goodwill is required to be tested for impairment at least annually. Factors that may be considered include a change in circumstances indicating that the carrying value of our goodwill or other intangible assets may not be recoverable include declines in our stock price and market capitalization or future cash flows projections. We recorded a charge during the fourth quarter of fiscal 2012 related to the impairment of intangibles in our SLS operating segment relating to the decision to discontinue the legacy Hypertronics products. A decline in our stock price, or any other adverse change in market conditions, particularly if such change has the effect of changing one of the critical assumptions or estimates we used to calculate the estimated fair value of our reporting units, could result in a change to the estimation of fair value that could result in an impairment charge. Any such material charges, whether related to goodwill or purchased intangible assets, may have a material negative impact on our financial and operating results.

We depend on skilled personnel to operate our business effectively in a rapidly changing market, and if we are unable to retain existing or hire additional personnel when needed, our ability to develop and sell our products could be harmed.

Our ability to continue to attract and retain highly skilled personnel will be a critical factor in determining whether we will be successful in the future. Recruiting and retaining highly skilled personnel in certain functions continues to be difficult. At certain locations where we operate, the cost of living is extremely high and it may be difficult to retain key employees and management at a reasonable cost. We may not be successful in attracting, assimilating or retaining qualified personnel to fulfill our current or future needs. Our failure to attract additional employees and retain our existing employees could adversely affect our growth and our business.

Our future success depends upon the continued services of our executive officers and other key engineering, sales, marketing, manufacturing and support personnel, any of whom may leave, which could harm our business and our results of operations.

The long sales cycles for our products may cause us to incur significant expenses without offsetting revenues.

Customers often view the purchase of our products as a significant and strategic decision. As a result, customers typically expend significant effort in evaluating, testing and qualifying our products before making a decision to purchase them, resulting in a lengthy initial sales cycle. While our customers are evaluating our products and before they place an order with us, we may incur substantial sales and marketing and research and development expenses to customize our products to the customers' needs. We may also expend significant management efforts, increase manufacturing capacity and order long lead-time components or materials prior to receiving an order. Even after this evaluation process, a potential customer may not purchase our products. As a result, these long sales cycles may cause us to incur significant expenses without ever receiving revenue to offset such expenses.

The markets in which we sell our products are intensely competitive and increased competition could cause reduced sales levels, reduced gross margins or the loss of market share.

Competition in the various photonics markets in which we provide products is very intense. We compete against a number of large public and private companies, including CVI Melles Griot, Cymer, Inc., GSI Group, Inc., IPG Photonics Corporation, JDS Uniphase Corporation, Newport Corporation, Rofin-Sinar Technologies, Inc., and Trumpf GmbH, as well as other smaller companies. Some of our competitors are large companies that have significant financial, technical, marketing and other resources. These competitors may be able to devote greater resources than we can to the development, promotion, sale and support of their products. Some of our competitors are much better positioned than we are to acquire other companies in order to gain new technologies or products that may displace our product lines. Any of these acquisitions could give our competitors a strategic advantage. Any business combinations or mergers among our competitors, forming larger companies with greater resources, could result in increased competition, price reductions, reduced margins or loss of market share, any of which could materially and adversely affect our business, results of operations and financial condition.

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Additional competitors may enter the markets in which we serve, both foreign and domestic, and we are likely to compete with new companies in the future. We may encounter potential customers that, due to existing relationships with our competitors, are committed to the products offered by these competitors. Further, our current or potential customers may determine to develop and produce products for their own use which are competitive to our products. As a result of the foregoing factors, we expect that competitive pressures may result in price reductions, reduced margins, loss of sales and loss of market share. In addition, in markets where there are a limited number of customers, competition is particularly intense.

If we fail to accurately forecast component and material requirements for our products, we could incur additional costs and incur significant delays in shipments, which could result in a loss of customers.

We use rolling forecasts based on anticipated product orders and material requirements planning systems to determine our product requirements. It is very important that we accurately predict both the demand for our products and the lead times required to obtain the necessary components and materials. We depend on our suppliers for most of our product components and materials. Lead times for components and materials that we order vary significantly and depend on factors including the specific supplier requirements, the size of the order, contract terms and current market demand for components. For substantial increases in our sales levels of certain products, some of our suppliers may need at least nine months lead-time. If we overestimate our component and material requirements, we may have excess inventory, which would increase our costs. If we underestimate our component and material requirements, we may have inadequate inventory, which could interrupt and delay delivery of our products to our customers. Any of these occurrences would negatively impact our net sales, business or operating results. 

Our increased reliance on contract manufacturing and other outsourcing may adversely impact our financial results and operations due to our decreased control over the performance and timing of certain aspects of our manufacturing.

Our manufacturing strategy includes partnering with contract manufacturers to outsource non-core subassemblies and less complex turnkey products, including some performed at international sites located in Asia and Eastern Europe. Additionally, we have outsourced the manufacture of certain of our optics components to certain third parties. Our ability to resume internal manufacturing operations for certain products and components in a timely manner may be eliminated. The cost, quality, performance and availability of contract manufacturing operations are and will be essential to the successful production and sale of many of our products. Our financial condition or results of operation could be adversely impacted if any contract manufacturer or other supplier is unable for any reason, including as a result of the impact of worldwide economic conditions, to meet our cost, quality, performance, and availability standards. We may not be able to provide contract manufacturers with product volumes that are high enough to achieve sufficient cost savings. If shipments fall below forecasted levels, we may incur increased costs or be required to take ownership of the inventory. Also, our ability to control the quality of products produced by contract manufacturers may be limited and quality issues may not be resolved in a timely manner, which could adversely impact our financial condition or results of operations.

If we fail to effectively manage our growth or, alternatively, our spending during downturns, our business could be disrupted, which could harm our operating results.

Growth in sales, combined with the challenges of managing geographically dispersed operations, can place a significant strain on our management systems and resources, and our anticipated growth in future operations could continue to place such a strain. The failure to effectively manage our growth could disrupt our business and harm our operating results. Our ability to successfully offer our products and implement our business plan in evolving markets requires an effective planning and management process. In economic downturns, we must effectively manage our spending and operations to ensure our competitive position during the downturn, as well as our future opportunities when the economy improves, remain intact. The failure to effectively manage our spending and operations could disrupt our business and harm our operating results.

Historically, acquisitions have been an important element of our strategy. However, we may not find suitable acquisition candidates in the future and we may not be able to successfully integrate and manage acquired businesses. Any acquisitions we make could disrupt our business and harm our financial condition.

We have in the past made strategic acquisitions of other corporations and entities, as well as asset purchases, and we continue to evaluate potential strategic acquisitions of complementary companies, products and technologies. In the event of any future acquisitions, we could:

• issue stock that would dilute our current stockholders' percentage ownership;

• pay cash that would decrease our working capital;

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• incur debt;

• assume liabilities; or

• incur expenses related to impairment of goodwill and amortization.

Acquisitions also involve numerous risks, including:

• problems combining the acquired operations, systems, technologies or products;

• an inability to realize expected operating efficiencies or product integration benefits;

• difficulties in coordinating and integrating geographically separated personnel, organizations, systems and facilities;

• difficulties integrating business cultures;

• unanticipated costs or liabilities, including the costs associated with improving the internal controls of the acquired company;

• diversion of management's attention from our core businesses;

• adverse effects on existing business relationships with suppliers and customers;

• potential loss of key employees, particularly those of the purchased organizations;

• incurring unforeseen obligations or liabilities in connection with acquisitions; and

• the failure to complete acquisitions even after signing definitive agreements which, among other things, would result in the expensing of potentially significant professional fees and other charges in the period in which the acquisition or negotiations are terminated.

We cannot assure you that we will be able to successfully identify appropriate acquisition candidates, to integrate any businesses, products, technologies or personnel that we might acquire in the future or achieve the anticipated benefits of such transactions, which may harm our business.

We are exposed to lawsuits in the normal course of business which could have a material adverse effect on our business, operating results, or financial condition.

We are exposed to lawsuits in the normal course of our business, including product liability claims, if personal injury, death or commercial losses occur from the use of our products. While we typically maintain business insurance, including directors' and officers' policies, litigation can be expensive, lengthy, and disruptive to normal business operations, including the potential impact of indemnification obligations for individuals named in any such lawsuits. We may not, however, be able to secure insurance coverage on terms acceptable to us in the future. Moreover, the results of complex legal proceedings are difficult to predict. An unfavorable resolution of a particular lawsuit, including a recall or redesign of products if ultimately determined to be defective, could have a material adverse effect on our business, operating results, or financial condition.

We use standard laboratory and manufacturing materials that could be considered hazardous and we could be liable for any damage or liability resulting from accidental environmental contamination or injury.

Although most of our products do not incorporate hazardous or toxic materials and chemicals, some of the gases used in our excimer lasers and some of the liquid dyes used in some of our scientific laser products are highly toxic. In addition, our operations involve the use of standard laboratory and manufacturing materials that could be considered hazardous. Also, if a facility fire were to occur at our Sunnyvale, California site and were to spread to a reactor used to grow semiconductor wafers, it could release highly toxic emissions. We believe that our safety procedures for handling and disposing of such materials comply with all federal, state and offshore regulations and standards. However, the risk of accidental environmental contamination or injury from such materials cannot be entirely eliminated. In the event of such an accident involving such materials, we could be liable for damages and such liability could exceed the amount of our liability insurance coverage and the resources of our business which could have an adverse effect on our financial results or our business as a whole.

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Compliance or the failure to comply with current and future environmental regulations could cause us significant expense.

We are subject to a variety of federal, state, local and foreign environmental regulations relating to the use, storage, discharge and disposal of hazardous chemicals used during our manufacturing process or requiring design changes or recycling of products we manufacture. If we fail to comply with any present and future regulations, we could be subject to future liabilities, the suspension of production or a prohibition on the sale of products we manufacture. In addition, such regulations could restrict our ability to expand our facilities or could require us to acquire costly equipment, or to incur other significant expenses to comply with environmental regulations, including expenses associated with the recall of any non-compliant product and the management of historical waste.

From time to time new regulations are enacted, and it is difficult to anticipate how such regulations will be implemented and enforced. We continue to evaluate the necessary steps for compliance with regulations as they are enacted. These regulations include, for example, the Registration, Evaluation, Authorization and Restriction of Chemical substances (“REACH”), the Restriction on the Use of Certain Hazardous Substances in Electrical and Electronic Equipment Directive (“RoHS”) and the Waste Electrical and Electronic Equipment Directive (“WEEE”) enacted in the European Union which regulate the use of certain hazardous substances in, and require the collection, reuse and recycling of waste from, certain products we manufacture. This and similar legislation that has been or is in the process of being enacted in Japan, China, Korea and various states of the United States may require us to re-design our products to ensure compliance with the applicable standards, for example by requiring the use of different types of materials. These redesigns or alternative materials may detrimentally impact the performance of our products, add greater testing lead-times for product introductions or have other similar effects. We believe we comply with all such legislation where our products are sold and we will continue to monitor these laws and the regulations being adopted under them to determine our responsibilities. In addition, we are monitoring legislation relating to the reduction of carbon emissions from industrial operations to determine whether we may be required to incur any additional material costs or expenses associated with our operations. We are not currently aware of any such material costs or expenses. The SEC has recently promulgated rules requiring disclosure regarding the use of certain “conflict minerals” mined from the Democratic Republic of Congo and adjoining countries and procedures regarding a manufacturer's efforts to prevent the sourcing of such minerals. The implementation of such rules may require significant additional expense, particularly in the event that only a limited pool of suppliers are available to certify that products are free from “conflict minerals.” Our failure to comply with any of the foregoing regulatory requirements or contractual obligations could result in our being directly or indirectly liable for costs, fines or penalties and third-party claims, and could jeopardize our ability to conduct business in the United States and foreign countries.

Our and our customers' operations would be seriously harmed if our logistics or facilities or those of our suppliers, our customers' suppliers or our contract manufacturers were to experience catastrophic loss.

Our and our customers' operations, logistics and facilities and those of our suppliers and contract manufacturers could be subject to a catastrophic loss from fire, flood, earthquake, volcanic eruption, work stoppages, power outages, acts of war, pandemic illnesses, energy shortages, theft of assets, other natural disasters or terrorist activity. A substantial portion of our research and development activities, manufacturing, our corporate headquarters and other critical business operations are located near major earthquake faults in Santa Clara, California, an area with a history of seismic events. Any such loss or detrimental impact to any of our operations, logistics or facilities could disrupt our operations, delay production, shipments and revenue and result in large expenses to repair or replace the facility. While we have obtained insurance to cover most potential losses, after reviewing the costs and limitations associated with earthquake insurance, we have decided not to procure such insurance. We believe that this decision is consistent with decisions reached by numerous other companies located nearby. We cannot assure you that our existing insurance coverage will be adequate against all other possible losses.

Difficulties with our enterprise resource planning (“ERP”) system and other parts of our global information technology system could harm our business and results of operation. If our network security measures are breached and unauthorized access is obtained to a customer's data or our data or our information technology systems, we may incur significant legal and financial exposure and liabilities.

Like many modern multinational corporations, we maintain a global information technology system, including software products licensed from third parties. Any system, network or Internet failures, misuse by system users, the hacking into or disruption caused by the unauthorized access by third parties or loss of license rights could disrupt our ability to timely and accurately manufacture and ship products or to report our financial information in compliance with the timelines mandated by the SEC. Any such failure, misuse, hacking, disruptions or loss would likely cause a diversion of management's attention from the underlying business and could harm our operations. In addition, a significant failure of our global information technology

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system could adversely affect our ability to complete an evaluation of our internal controls and attestation activities pursuant to Section 404 of the Sarbanes-Oxley Act of 2002.

As part of our day-to-day business, we store our data and certain data about our customers in our global information technology system. While our system is designed with access security, if a third party gains unauthorized access to our data, including any regarding our customers, such security breach could expose us to a risk of loss of this information, loss of business, litigation and possible liability. These security measures may be breached as a result of third-party action, including intentional misconduct by computer hackers, employee error, malfeasance or otherwise. Additionally, third parties may attempt to fraudulently induce employees or customers into disclosing sensitive information such as user names, passwords or other information in order to gain access to our customers' data or our data, including our intellectual property and other confidential business information, or our information technology systems. Because the techniques used to obtain unauthorized access, or to sabotage systems, change frequently and generally are not recognized until launched against a target, we may be unable to anticipate these techniques or to implement adequate preventative measures. Any security breach could result in a loss of confidence by our customers, damage our reputation, disrupt our business, lead to legal liability and negatively impact our future sales.

Changes in tax rates, tax liabilities or tax accounting rules could affect future results.

As a global company, we are subject to taxation in the United States and various other countries and jurisdictions. Significant judgment is required to determine worldwide tax liabilities. Our future tax rates could be affected by changes in the composition of earnings in countries or states with differing tax rates, changes in the valuation of our deferred tax assets and liabilities, or changes in the tax laws. In addition, we are subject to regular examination of our income tax returns by the Internal Revenue Service (“IRS”) and other tax authorities. From time to time the United States, foreign and state governments make substantive changes to tax rules and the application of rules to companies, including various announcements from the United States government potentially impacting our ability to defer taxes on international earnings. We regularly assess the likelihood of favorable or unfavorable outcomes resulting from these examinations to determine the adequacy of our provision for income taxes. Although we believe our tax estimates are reasonable, there can be no assurance that any final determination will not be materially different than the treatment reflected in our historical income tax provisions and accruals, which could materially and adversely affect our operating results and financial condition.

Changing laws, regulations and standards relating to corporate governance and public disclosure may create uncertainty regarding compliance matters.

Federal securities laws, rules and regulations, as well as the rules and regulations of self-regulatory organizations such as NASDAQ and the NYSE, require companies to maintain extensive corporate governance measures, impose comprehensive reporting and disclosure requirements, set strict independence and financial expertise standards for audit and other committee members and impose civil and criminal penalties for companies and their chief executive officers, chief financial officers and directors for securities law violations. These laws, rules and regulations have increased and will continue to increase the scope, complexity and cost of our corporate governance, reporting and disclosure practices, which could harm our results of operations and divert management's attention from business operations. Changing laws, regulations and standards relating to corporate governance and public disclosure may create uncertainty regarding compliance matters. New or changed laws, regulations and standards are subject to varying interpretations in many cases. As a result, their application in practice may evolve over time. We are committed to maintaining high standards of ethics, corporate governance and public disclosure. Complying with evolving interpretations of new or changed legal requirements may cause us to incur higher costs as we revise current practices, policies and procedures, and may divert management time and attention from revenue generating to compliance activities. If our efforts to comply with new or changed laws, regulations and standards differ from the activities intended by regulatory or governing bodies due to ambiguities related to practice, our reputation may also be harmed.

Governmental regulations, including duties, affecting the import or export of products could negatively affect our revenues.

The United States and many foreign governments impose tariffs and duties on the import and export of products, including some of those which we sell. In particular, given our worldwide operations, we pay duties on certain products when they are imported into the United States for repair work as well as on certain of our products which are manufactured by our foreign subsidiaries. These products can be subject to a duty on the product value. Additionally, the United States and various foreign governments have imposed tariffs, controls, export license requirements and restrictions on the import or export of some technologies, especially encryption technology. From time to time, government agencies have proposed additional regulation of encryption technology, such as requiring the escrow and governmental recovery of private encryption keys. Governmental regulation of encryption technology and regulation of imports or exports, or our failure to obtain required import or export

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approval for our products, could harm our international and domestic sales and adversely affect our revenues. From time to time our duty calculations and payments are audited by government agencies.

In addition, compliance with the directives of the Directorate of Defense Trade Controls (“DDTC”) may result in substantial expenses and diversion of management. Any failure to adequately address the directives of DDTC could result in civil fines or suspension or loss of our export privileges, any of which could have a material adverse effect on our business or financial position, results of operations, or cash flows.

Our market is unpredictable and characterized by rapid technological changes and evolving standards demanding a significant investment in research and development, and, if we fail to address changing market conditions, our business and operating results will be harmed.

The photonics industry is characterized by extensive research and development, rapid technological change, frequent new product introductions, changes in customer requirements and evolving industry standards. Because this industry is subject to rapid change, it is difficult to predict its potential size or future growth rate. Our success in generating revenues in this industry will depend on, among other things:

• maintaining and enhancing our relationships with our customers;

• the education of potential end-user customers about the benefits of lasers and laser systems; and

• our ability to accurately predict and develop our products to meet industry standards.

For the three months ended December 29, 2012, our research and development costs were $19.3 million (10.5% of net sales). For our fiscal years 2012, 2011 and 2010, our research and development costs were $78.3 million (10.2% of net sales), $81.2 million (10.1% of net sales) and $72.4 million (12.0% of net sales), respectively. We cannot assure you that our expenditures for research and development will result in the introduction of new products or, if such products are introduced, that those products will achieve sufficient market acceptance or to generate sales to offset the costs of development. Our failure to address rapid technological changes in our markets could adversely affect our business and results of operations.

Failure to maintain effective internal controls may cause a loss of investor confidence in the reliability of our financial statements or to cause us to delay filing our periodic reports with the SEC and adversely affect our stock price.

The SEC, as directed by Section 404 of the Sarbanes-Oxley Act of 2002, adopted rules requiring public companies to include a report of management on internal control over financial reporting in their annual reports on Form 10-K that contain an assessment by management of the effectiveness of the Company's internal control over financial reporting. In addition, our independent registered public accounting firm must attest to and report on the effectiveness of our internal control over financial reporting. Although we test our internal control over financial reporting in order to ensure compliance with the Section 404 requirements, our failure to maintain adequate internal controls over financial reporting could result in an adverse reaction in the financial marketplace due to a loss of investor confidence in the reliability of our financial statements or a delay in our ability to timely file our periodic reports with the SEC, which ultimately could negatively impact our stock price.

Provisions of our charter documents and Delaware law, and our Change-of-Control Severance Plan may have anti-takeover effects that could prevent or delay a change in control.

Provisions of our certificate of incorporation and bylaws may discourage, delay or prevent a merger or acquisition or make removal of incumbent directors or officers more difficult. These provisions may discourage takeover attempts and bids for our common stock at a premium over the market price. These provisions include:

• the ability of our Board of Directors to alter our bylaws without stockholder approval;

• limiting the ability of stockholders to call special meetings; and

• establishing advance notice requirements for nominations for election to our Board of Directors or for proposing matters that can be acted on by stockholders at stockholder meetings.

We are subject to Section 203 of the Delaware General Corporation Law, which prohibits a publicly-held Delaware corporation from engaging in a merger, asset or stock sale or other transaction with an interested stockholder for a period of three years following the date such person became an interested stockholder, unless prior approval of our board of directors is obtained or

54

as otherwise provided. These provisions of Delaware law also may discourage, delay or prevent someone from acquiring or merging with us without obtaining the prior approval of our board of directors, which may cause the market price of our common stock to decline. In addition, we have adopted a change of control severance plan, which provides for the payment of a cash severance benefit to each eligible employee based on the employee's position. If a change of control occurs, our successor or acquirer will be required to assume and agree to perform all of our obligations under the change of control severance plan which may discourage potential acquirers or result in a lower stock price.

55

ITEM 6. EXHIBITS

Exhibit No.	Description
3.3+	Bylaws (Previously filed as Exhibit 3.1 to Form 8-K filed on December 12, 2012).
10.1+‡	Change of Control Plan (Previously filed as Exhibit 10.1 to Form 8-K filed on December 12, 2012).
10.2‡	Fiscal 2012 Variable Compensation Plan Payout Scale for Named Executive Officers.
10.3‡ **	Fiscal 2013 Variable Compensation Plan Payout Scale for Named Executive Officers.
31.1	Certification of Chief Executive Officer pursuant to Exchange Act Rule 13a-14(a)/15d-14(a) as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2	Certification of Chief Financial Officer pursuant to Exchange Act Rule 13a-14(a)/15d-14(a) as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1	Certification of Chief Executive Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2	Certification of Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101.INS*	XBRL Instance Document
101.SCH*	XBRL Taxonomy Extension Schema
101.CAL*	XBRL Taxonomy Extension Calculation Linkbase
101.DEF*	XBRL Taxonomy Extension Definition Linkbase
101.LAB*	XBRL Taxonomy Extension Label Linkbase
101.PRE*	XBRL Taxonomy Extension Presentation Linkbase

+    These exhibits were previously filed with the Commission as indicated and are incorporated herein by reference.

‡     Identifies management contract or compensatory plans or arrangements required to be filed as an exhibit.

* In accordance with Rule 406T of Regulation S-T, the information in these exhibits is furnished and deemed not filed or part of a registration statement or prospectus for purposes of sections 11 or 12 of the Securities Act of 1933, is deemed not filed for purposes of section 18 of the Exchange Act of 1934, and otherwise is not subject to liability under these sections.

** Portions of this exhibit are redacted and confidential treatment has been requested with the Securities and Exchange Commission.

56

COHERENT, INC.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this Report to be signed on its behalf by the undersigned, thereunto duly authorized.

		Coherent, Inc.
		(Registrant)
Date:	February 6, 2013	/s/:	JOHN R. AMBROSEO
			John R. Ambroseo
			President and Chief Executive Officer
			(Principal Executive Officer)
Date:	February 6, 2013	/s/:	HELENE SIMONET
			Helene Simonet
			Executive Vice President and Chief Financial Officer
			(Principal Financial and Accounting Officer)

57

EXHIBIT INDEX

Exhibit No.	Description
3.3+	Bylaws (Previously filed as Exhibit 3.1 to Form 8-K filed on December 12, 2012).
10.1+‡	Change of Control Plan (Previously filed as Exhibit 10.1 to Form 8-K filed on December 12, 2012).
10.2‡	Fiscal 2012 Variable Compensation Plan Payout Scale for Named Executive Officers.
10.3‡**	Fiscal 2013 Variable Compensation Plan Payout Scale for Named Executive Officers.
31.1	Certification of Chief Executive Officer pursuant to Exchange Act Rule 13a-14(a)/15d-14(a) as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2	Certification of Chief Financial Officer pursuant to Exchange Act Rule 13a-14(a)/15d-14(a) as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1	Certification of Chief Executive Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2	Certification of Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101.INS*	XBRL Instance Document
101.SCH*	XBRL Taxonomy Extension Schema
101.CAL*	XBRL Taxonomy Extension Calculation Linkbase
101.DEF*	XBRL Taxonomy Extension Definition Linkbase
101.LAB*	XBRL Taxonomy Extension Label Linkbase
101.PRE*	XBRL Taxonomy Extension Presentation Linkbase

+    These exhibits were previously filed with the Commission as indicated and are incorporated herein by reference.

‡     Identifies management contract or compensatory plans or arrangements required to be filed as an exhibit.

* In accordance with Rule 406T of Regulation S-T, the information in these exhibits is furnished and deemed not filed or part of a registration statement or prospectus for purposes of sections 11 or 12 of the Securities Act of 1933, is deemed not filed for purposes of section 18 of the Exchange Act of 1934, and otherwise is not subject to liability under these sections.

** Portions of this exhibit are redacted and confidential treatment has been requested with the Securities and Exchange Commission.

58

EX-10.2

Fiscal 2012 Variable Compensation Plan Payout Scale for Named Executive Officers        Ex. 10.2

EX-10.3

Fiscal 2013 Variable Compensation Plan Payout Scale for Named Executive Officers Exhibit 10.3

EX-31.1

Exhibit 31.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER

I, John R. Ambroseo, certify that:

1.I have reviewed this quarterly report on Form 10-Q of Coherent, Inc.;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5.The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

(a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

(b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting. 

Date:	February 6, 2013
/s/: JOHN R. AMBROSEO
John R. Ambroseo
President and Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION OF CHIEF FINANCIAL OFFICER

I, Helene Simonet, certify that:

1.I have reviewed this quarterly report on Form 10-Q of Coherent, Inc.;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5.The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

(a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

(b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting. 

Date:	February 6, 2013
/s/: HELENE SIMONET
Helene Simonet
Executive Vice President and Chief Financial Officer

EX-32.1

Exhibit 32.1

Certification of Chief Executive Officer Pursuant to 18 U.S.C. Section 1350,

As Adopted Pursuant to Section 906 of the As Sarbanes-Oxley Act of 2002

I, John R. Ambroseo, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Quarterly Report of Coherent, Inc. on Form 10-Q for the fiscal quarter ended December 29, 2012 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that the information contained in such Quarterly Report on Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of Coherent, Inc.

Date:	February 6, 2013
/s/: JOHN R. AMBROSEO
John R. Ambroseo
President and Chief Executive Officer

EX-32.2

Exhibit 32.2

Certification of Chief Financial Officer Pursuant to 18 U.S.C. Section 1350,

As Adopted Pursuant to Section 906 of the As Sarbanes-Oxley Act of 2002

I, Helene Simonet, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Quarterly Report of Coherent, Inc. on Form 10-Q for the fiscal quarter ended December 29, 2012 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that the information contained in such Quarterly Report on Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of Coherent, Inc.

Date:	February 6, 2013
/s/: HELENE SIMONET
Helene Simonet
Executive Vice President and Chief Financial Officer

XML

Fair Values (Details) (Fair Value, Measurements, Recurring, USD $) In Thousands, unless otherwise specified	Dec. 29, 2012		Sep. 29, 2012
Total Fair Value
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Foreign currency contracts	$ 1,092	[1],[2]	$ (21)	[1],[3]
Total Fair Value | Supplemental Employee Retirement Plans, Defined Benefit
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Mutual funds - Deferred comp and supplemental plan	6,770	[4],[5]	6,400	[4],[6]
Total Fair Value | Money market fund deposits
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	20,932	[7]	10,340	[8]
Total Fair Value | Certificates of deposit
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	7,299	[10],[9]	31,253	[11],[9]
Total Fair Value | U.S. and international government obligations
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Assets, Fair Value Disclosure			110,967	[12],[9]
Total Fair Value | US Treasury and agency obligations
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Assets, Fair Value Disclosure	86,647	[13],[9]
Total Fair Value | Corporate notes and obligations
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Assets, Fair Value Disclosure	8,129	[14],[9]	43,406	[15],[9]
Total Fair Value | Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Assets, Fair Value Disclosure	1,999	[14],[9]	2,000	[12],[9]
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Foreign currency contracts	0	[1],[2]	0	[1],[3]
Quoted Prices in Active Markets for Identical Assets (Level 1) | Supplemental Employee Retirement Plans, Defined Benefit
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Mutual funds - Deferred comp and supplemental plan	6,770	[4],[5]	6,400	[4],[6]
Quoted Prices in Active Markets for Identical Assets (Level 1) | Supplemental Employee Retirement Plans, Defined Benefit | Prepaid expenses and other assets
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Mutual funds - Deferred comp and supplemental plan	2,940		2,891
Quoted Prices in Active Markets for Identical Assets (Level 1) | Supplemental Employee Retirement Plans, Defined Benefit | Other assets
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Mutual funds - Deferred comp and supplemental plan	3,830		3,509
Quoted Prices in Active Markets for Identical Assets (Level 1) | Money market fund deposits
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	20,932	[7]	10,340	[8]
Quoted Prices in Active Markets for Identical Assets (Level 1) | Certificates of deposit
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	0	[10],[9]	0	[11],[9]
Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. and international government obligations
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Assets, Fair Value Disclosure			0	[12],[9]
Quoted Prices in Active Markets for Identical Assets (Level 1) | US Treasury and agency obligations
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Assets, Fair Value Disclosure	0	[13],[9]
Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate notes and obligations
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Assets, Fair Value Disclosure	0	[14],[9]	0	[15],[9]
Quoted Prices in Active Markets for Identical Assets (Level 1) | Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Assets, Fair Value Disclosure	0	[14],[9]	0	[12],[9]
Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Foreign currency contracts	1,092	[1],[2]	(21)	[1],[3]
Significant Other Observable Inputs (Level 2) | Prepaid expenses and other assets
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Foreign currency contracts	1,240		626
Significant Other Observable Inputs (Level 2) | Other current liabilities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Foreign currency contracts	(148)		(645)
Significant Other Observable Inputs (Level 2) | Supplemental Employee Retirement Plans, Defined Benefit
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Mutual funds - Deferred comp and supplemental plan	0	[4],[5]	0	[4],[6]
Significant Other Observable Inputs (Level 2) | Money market fund deposits
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	0	[7]	0	[8]
Significant Other Observable Inputs (Level 2) | Certificates of deposit
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	7,299	[10],[9]	31,253	[11],[9]
Significant Other Observable Inputs (Level 2) | Certificates of deposit | Cash and Cash Equivalents [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	5,278		29,234
Significant Other Observable Inputs (Level 2) | Certificates of deposit | Short-term investments
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	2,021		2,019
Significant Other Observable Inputs (Level 2) | U.S. and international government obligations
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Assets, Fair Value Disclosure			110,967	[12],[9]
Significant Other Observable Inputs (Level 2) | US Treasury and agency obligations
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Assets, Fair Value Disclosure	86,647	[13],[9]
Significant Other Observable Inputs (Level 2) | US Treasury and agency obligations | Cash and Cash Equivalents [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Assets, Fair Value Disclosure	5,016
Significant Other Observable Inputs (Level 2) | US Treasury and agency obligations | Short-term investments
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Assets, Fair Value Disclosure	81,631
Significant Other Observable Inputs (Level 2) | Corporate notes and obligations
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Assets, Fair Value Disclosure	8,129	[14],[9]	43,406	[15],[9]
Significant Other Observable Inputs (Level 2) | Corporate notes and obligations | Cash and Cash Equivalents [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Assets, Fair Value Disclosure			1,223
Significant Other Observable Inputs (Level 2) | Corporate notes and obligations | Short-term investments
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Assets, Fair Value Disclosure			42,183
Significant Other Observable Inputs (Level 2) | Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Assets, Fair Value Disclosure	$ 1,999	[14],[9]	$ 2,000	[12],[9]

[1] The principal market in which we execute our foreign currency contracts is the institutional market in an over-the-counter environment with a relatively high level of price transparency. The market participants usually are large commercial banks. Our foreign currency contracts’ valuation inputs are based on quoted prices and quoted pricing intervals from public data sources and do not involve management judgment.

[2] Includes $1,240 recorded in prepaid expenses and other assets and $148 recorded in other current liabilities on the Condensed Consolidated Balance Sheet (see Note 5).

[3] Includes $626 recorded in prepaid expenses and other assets and $645 recorded in other current liabilities on the Condensed Consolidated Balance Sheet.

[4] The fair value of mutual funds is determined based on quoted market prices. Securities traded on a national exchange are stated at the last reported sales price on the day of valuation; other securities traded in over-the-counter market and listed securities for which no sale was reported on that date are stated as the last quoted bid price.

[5] Includes $2,940 recorded in prepaid expenses and other assets and $3,830 recorded in other assets on the Condensed Consolidated Balance Sheet.

[6] Includes $2,891 recorded in prepaid expenses and other assets and $3,509 recorded in other assets on the Condensed Consolidated Balance Sheet.

[7] Included in cash and cash equivalents on the Condensed Consolidated Balance Sheet. The carrying amounts approximate fair value due to the short-term maturities of the cash equivalents.

[8] Included in cash and cash equivalents on the Condensed Consolidated Balance Sheet.

[9] Valuations are based upon quoted market prices in active markets involving similar assets. The market inputs used to value these instruments generally consist of market yields, reported trades, broker/dealer quotes or alternative pricing sources with reasonable levels of price transparency. Pricing sources include industry standard data providers, security master files from large financial institutions, and other third party sources which are input into a distribution-curve-based algorithm to determine a daily market value. This creates a “consensus price” or a weighted average price for each security.

[10] Includes $5,278 recorded in cash and cash equivalents and $2,021 recorded in short-term investments on the Condensed Consolidated Balance Sheet.

[11] Includes $29,234 recorded in cash and cash equivalents and $2,019 recorded in short-term investments on the Condensed Consolidated Balance Sheet.

[12] Included in short-term investments on the Condensed Consolidated Balance Sheet.

[13] Includes $5,016 recorded in cash and cash equivalents and $81,631 recorded in short-term investments on the Condensed Consolidated Balance Sheet.

[14] ncluded in short-term investments on the Condensed Consolidated Balance Sheet.

[15] Includes $1,223 recorded in cash and cash equivalents and $42,183 recorded in short-term investments on the Condensed Consolidated Balance Sheet.

XML

Income Taxes (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Dec. 29, 2012
Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation [Abstract]
Estimated effective income tax rate	25.70%
U.S. Federal statutory rate	35.00%
Income Tax Uncertainties [Abstract]
Gross unrecognized tax benefits	$ 25.8
Gross urecognized tax benefits, if recognized, would affect effective tax rate	16.3
Gross interest and penatlites accrued	1.3
Possible reduction in unrecognized tax benefits, lower bound	(0.2)
Possible reduction in unrecognized tax benefits, upper bound	(2.4)
Effective Income Tax Rate Reconciliation, Subpart F, Amount	0.5
Components of Deferred Tax Assets [Abstract]
Deferred tax assets before valuation allowance	55.2
Valuation allowance	9.1
Minimum
Income Tax Uncertainties [Abstract]
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount	1.0
Maximum [Member]
Income Tax Uncertainties [Abstract]
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount	$ 2.5

XML

Stock-Based Compensation (Stock Compensation Expense) (Details) (USD $)	3 Months Ended
	Dec. 29, 2012	Dec. 31, 2011
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures	0
Allocated stock-based compensation expense	$ 3,511,000	$ 2,694,000
Total stock-based compensation cost capitalized as part of inventory	600,000	500,000
Total stock-based compensation cost amortized into income	400,000	400,000
Total compensation cost, unvested stock-based awards granted but not yet recognized	26,200,000
Total compensation cost, unvested stock-based awards granted, but not yet recognized, forfeitures	1,300,000
Total compensation cost, weighted-average period of amortization (in years)	1 year 3 months 18 days
Excess tax benefits as cash flow from financing activites	0	1,681,000
Cost of sales
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated stock-based compensation expense	435,000	369,000
Research and development
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated stock-based compensation expense	476,000	393,000
Selling, general and administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated stock-based compensation expense	4,083,000	3,260,000
Income tax benefit
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated stock-based compensation expense	(1,483,000)	(1,328,000)
Employee Stock [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total compensation cost, unvested stock-based awards granted but not yet recognized	600,000
Total compensation cost, weighted-average period of amortization (in years)	6 months
PeriodEnd [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation cost capitalized as part of inventory	$ 700,000	$ 500,000

XML

Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 29, 2012 segments	Dec. 31, 2011
Segment Reporting Information [Line Items]
Number of reportable operating segments	2
Net sales	$ 183,202	$ 190,767
Income (loss) from continuing operations	20,498	25,313
Commercial Lasers and Components
Segment Reporting Information [Line Items]
Net sales	51,742	55,150
Income (loss) from continuing operations	1,825	4,020
Specialty Laser Systems
Segment Reporting Information [Line Items]
Net sales	131,460	135,617
Income (loss) from continuing operations	30,334	31,030
Corporate and other
Segment Reporting Information [Line Items]
Income (loss) from continuing operations	$ (11,661)	$ (9,737)

XML

Short-Term Borrowings (Details) (USD $)	Dec. 29, 2012
Line of Credit, Foreign
Line of Credit Facility [Line Items]
Lines of credit	$ 15,800,000
Amounts drawn upon line of credit	2,300,000
Line of Credit, Domestic
Line of Credit Facility [Line Items]
Amounts drawn upon line of credit	0
Line of Credit, Domestic | Union Bank of California, Unsecured Revolving Credit Account
Line of Credit Facility [Line Items]
Lines of credit	$ 50,000,000

XML

Earnings per Share (Tables)

3 Months Ended

Dec. 29, 2012

Earnings Per Share [Abstract]

Schedule of information necessary to calculate basic and diluted earnings (loss) per share

The following table presents information necessary to calculate basic and diluted earnings per share (in thousands, except per share data): 

	Three Months Ended
	December 29, 2012		December 31, 2011
Weighted average shares outstanding —basic	23,770		23,462
Dilutive effect of employee stock awards	452		499
Weighted average shares outstanding—diluted	24,222		23,961
Net income	$	14,153	$	17,051
Net income per basic share	$	0.60	$	0.73
Net income per diluted share	$	0.58	$	0.71

XML

Recent Accounting Standards Recent Accounting Standards (Policies)

3 Months Ended

Dec. 29, 2012

Accounting Policies [Abstract]

New Accounting Pronouncements, Policy [Policy Text Block]

Adoption of New Accounting Pronouncements

In July 2012, the Financial Accounting Standards Board (“FASB”) amended existing guidance related to goodwill and other intangible assets by giving an entity testing an indefinite-lived intangible asset for impairment the option to first assess qualitative factors to determine whether it is more likely than not (that is, a likelihood of more than 50 percent) that the fair value of an intangible asset is less than its carrying amount. If the entity determines, on the basis of qualitative factors, that the fair value of the indefinite-lived intangible asset is not more likely than not impaired, the entity would not need to calculate the fair value of the asset. The guidance does not revise the requirement to test indefinite-lived intangible assets annually for impairment or to test these assets for impairment between annual tests if there is a change in events or circumstances. This amended guidance was effective for annual and interim impairment tests performed for fiscal years beginning after September 15, 2012. We adopted this authoritative guidance in the first quarter of fiscal 2013. As we did not have any indefinite-lived intangible assets recorded in our consolidated balance sheet, the implementation of this authoritative guidance did not have a material impact on our consolidated financial position, results of operations and cash flows in connection with our impairment testing.

Recently Issued Accounting Pronouncement

In December 2011, the FASB issued guidance which requires an entity to disclose information about offsetting and related arrangements to enable financial statement users to evaluate the effect or potential effect of netting arrangements, including rights of setoff associated with the entity's recognized financial assets and liabilities, on the entity's financial position. The new disclosures will enable financial statement users to compare balance sheets prepared under U.S. GAAP and International Financial Reporting Standards ("IFRS"), which are subject to different offsetting models. The disclosures will be limited to financial instruments (and derivatives) subject to enforceable master netting arrangements or similar agreements. Similar agreements include derivative clearing agreements, global master repurchase agreements, and global master securities lending agreements. Financial instruments and transactions that will be subject to the disclosure requirements may include derivatives, repurchase and reverse repurchase agreements, and securities lending and borrowing arrangements. An entity should provide the disclosures required by those amendments retrospectively for all comparative periods presented. The guidance is effective for us beginning in fiscal 2014. We are currently evaluating the potential impact, if any, of the adoption of this guidance on our consolidated financial position, results of operations and cash flows.

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Accumulated Other Comprehensive Income (Details) (USD $) In Millions, unless otherwise specified	Dec. 29, 2012	Sep. 29, 2012
Foreign Currency Translation [Abstract]
Accumulated translation adjustments	$ 44.6	$ 40.4

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Short-Term Investments (Details) (USD $)	3 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Sep. 29, 2012
Available-for-sale Securities, Amortized Cost Basis [Abstract]
Cash and cash equivalent, Cost Basis	$ 87,980,000		$ 67,752,000
Cash and cash equivalent, Unrealized Gains	16,000		9,000
Cash and cash equivalent, Unrealized Losses	0		0
Cash and cash equivalent, Fair Value	87,996,000		67,761,000
Available-for-sale securities: Cost Basis	91,328,000		156,217,000
Available-for-sale securities: Unrealized Gains	454,000		954,000
Available-for-sale securities: Unrealized Losses	(1,000)		(3,000)
Available-for-sale securities: Fair Value	91,781,000		157,168,000
Available-for-sale Securities, Debt Maturities [Abstract]
Due in less than 1 year, Amortized Cost	89,320,000		154,200,000
Due in less than 1 year, Estimated Fair Value	89,760,000		155,149,000
Proceeds from sale of available-for-sale securities	56,600,000	27,500,000
Gross unrealized losses on investments with unrealized losses that are deemed to be availble-for-sale securities	2,000
Maximum [Member]
Available-for-sale Securities, Debt Maturities [Abstract]
Realized gross gains from sale of available-for-sale securities	100,000	100,000
Certificates of deposit
Available-for-sale Securities, Amortized Cost Basis [Abstract]
Available-for-sale securities: Cost Basis	2,008,000		2,017,000
Available-for-sale securities: Unrealized Gains	13,000		2,000
Available-for-sale securities: Unrealized Losses	0		0
Available-for-sale securities: Fair Value	2,021,000		2,019,000
US Treasury and agency obligations
Available-for-sale Securities, Amortized Cost Basis [Abstract]
Available-for-sale securities: Cost Basis	81,272,000		108,284,000
Available-for-sale securities: Unrealized Gains	359,000		666,000
Available-for-sale securities: Unrealized Losses	0		(2,000)
Available-for-sale securities: Fair Value	81,631,000		108,948,000
International government obligations [Member]
Available-for-sale Securities, Amortized Cost Basis [Abstract]
Available-for-sale securities: Cost Basis			2,004,000
Available-for-sale securities: Unrealized Gains			14,000
Available-for-sale securities: Unrealized Losses			0
Available-for-sale securities: Fair Value			2,018,000
Corporate notes and obligations
Available-for-sale Securities, Amortized Cost Basis [Abstract]
Available-for-sale securities: Cost Basis	8,048,000		41,912,000
Available-for-sale securities: Unrealized Gains	82,000		272,000
Available-for-sale securities: Unrealized Losses	(1,000)		(1,000)
Available-for-sale securities: Fair Value	8,129,000		42,183,000
Available-for-sale Securities, Debt Maturities [Abstract]
Total investments in available-for-sale debt securities, Estimated Fair Value	6,700,000
Commercial Paper [Member]
Available-for-sale Securities, Amortized Cost Basis [Abstract]
Available-for-sale securities: Cost Basis			2,000,000
Available-for-sale securities: Unrealized Gains			0
Available-for-sale securities: Unrealized Losses			0
Available-for-sale securities: Fair Value			$ 2,000,000

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Business Combinations (Details) (USD $)	3 Months Ended	12 Months Ended		3 Months Ended							3 Months Ended	12 Months Ended		3 Months Ended
	Dec. 29, 2012 Lumera [Member]	Sep. 29, 2012 Lumera [Member]	Dec. 20, 2012 Lumera [Member] projects	Dec. 29, 2012 Lumera [Member] Minimum [Member]	Dec. 29, 2012 Lumera [Member] Maximum [Member]	Dec. 20, 2012 Lumera [Member] Existing technology	Dec. 20, 2012 Lumera [Member] In-process R&D	Dec. 20, 2012 Lumera [Member] Trade Names [Member]	Dec. 20, 2012 Lumera [Member] Customer Lists [Member]	Dec. 20, 2012 Lumera [Member] Backlog	Dec. 29, 2012 Innolight [Member]	Sep. 29, 2012 Innolight [Member]	Oct. 30, 2012 Innolight [Member] projects	Dec. 29, 2012 Innolight [Member] Minimum [Member]	Dec. 29, 2012 Innolight [Member] Maximum [Member]	Oct. 30, 2012 Innolight [Member] Existing Technology and Production Know-how [Member]	Oct. 30, 2012 Innolight [Member] In-process R&D	Oct. 30, 2012 Innolight [Member] Trade Names [Member]	Oct. 30, 2012 Innolight [Member] Customer Lists [Member]
Business Acquisition [Line Items]
Business Acquisition, Number of Projects Acquired			2										2
Business acquisition, cash paid			$ 51,461,000										$ 18,336,000
Business Acquisition, Purchase Price Allocation [Abstract]
Tangible assets			14,820,000										2,510,000
Goodwill			24,628,000										8,253,000
Intangible assets:						20,300,000	1,800,000	200,000	6,500,000	1,000,000						8,500,000	430,000	100,000	2,800,000
Deferred tax liabilities			(8,994,000)										(3,777,000)
Liabilities assumed			8,793,000										480,000
Total			51,461,000										18,336,000
Acquired Finite-lived Intangible Asset, Weighted Average Useful Life				1 year	6 years									6 years	7 years
Expensed acquisition-related costs	$ 300,000	$ 300,000									$ 100,000	$ 100,000

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Other Income (Expense) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 29, 2012	Dec. 31, 2011
Component of Other Income (Expense), Nonoperating [Line Items]
Other Nonoperating Income (Expense)	$ (1,475)	$ 318
Foreign exchange gain (loss)
Component of Other Income (Expense), Nonoperating [Line Items]
Other Nonoperating Income (Expense)	(1,769)	313
Gain (Loss) on deferred compensation investments, net
Component of Other Income (Expense), Nonoperating [Line Items]
Other Nonoperating Income (Expense)	294	(54)
Other-net
Component of Other Income (Expense), Nonoperating [Line Items]
Other Nonoperating Income (Expense)	$ 0	$ 59

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Stock-Based Compensation (Fair Value of Stock Compensation) (Details) (USD $)	3 Months Ended
	Dec. 29, 2012	Dec. 31, 2011
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Restricted stock awards and units vesting period (in years)	3 years
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Restricted stock awards and units vesting period (in years)	3 years
Employee Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Expected life in years	0 years 6 months	0 years 6 months
Expected volatility	34.80%	49.30%
Risk-free interest rate	0.20%	0.10%
Expected dividends	$ 0.01	$ 0
Weighted average fair value per share	$ 10.60	$ 14.93
Performance Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Expected volatility	37.90%	41.80%
Risk-free interest rate	0.30%	0.40%
Weighted average fair value per share	$ 48.48	$ 71.59
Performance Restricted Stock Units [Member] | Annual vesting
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Restricted stock awards and units vesting period (in years)	2 years
Performance Restricted Stock Units [Member] | Single vest measurement
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Restricted stock awards and units vesting period (in years)	3 years

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Business Combinations

3 Months Ended

Dec. 29, 2012

Business Combinations [Abstract]

Business Combinations

BUSINESS COMBINATIONS

Lumera Laser GmbH

On December 20, 2012, we acquired privately held Lumera Laser GmbH (Kaiserslautern, Germany) ("Lumera") for approximately $51.5 million, excluding transaction costs. Lumera manufactures ultrafast solid state lasers for microelectronics, OEM medical and materials processing applications. Lumera has been included in our Specialty Lasers and Systems segment.

Our preliminary allocation of the purchase price is as follows (in thousands):

Tangible assets	$	14,820
Goodwill	24,628
Intangible assets:
Existing technology	20,300
In-process R&D	1,800
Trade name	200
Customer lists	6,500
Backlog	1,000
Deferred tax liabilities	(8,994)
Liabilities assumed	(8,793)
Total	$	51,461

Results of operations for the business have been included in our consolidated financial statements subsequent to the date of acquisition and pro forma results of operations in accordance with authoritative guidance for prior periods have not been presented because the effect of the acquisition was not material to our prior period consolidated financial results.

None of the goodwill from this purchase is deductible for tax purposes.

The identifiable intangible assets are being amortized over their respective useful lives of less than one to six years.

In-process research and development (“IPR&D”) consists of two projects that have not yet reached technological feasibility. Acquired IPR&D assets are initially recognized at fair value and are classified as indefinite-lived assets until the successful completion or abandonment of the associated research and development efforts. The value assigned to IPR&D was determined by considering the value of the products under development to the overall development plan, estimating the resulting net cash flows from the projects when completed and discounting the net cash flows to their present value. During the development period, these assets will not be amortized as charges to earnings; instead these assets will be subject to periodic impairment testing. Upon successful completion of the development process for the acquired IPR&D projects, the assets would then be considered finite-lived intangible assets and amortization of the assets will commence. None of the projects have been completed as of December 29, 2012.

We expensed $0.3 million of acquisition-related costs as selling, general and administrative expenses in our consolidated statements of operations in the three months endedDecember 29, 2012 and expensed $0.3 million of acquisition-related costs as selling, general and administrative expenses in our consolidated statements of operations in fiscal 2012.

Innolight Innovative Laser and Systemtechnik GmbH

On October 30, 2012, we acquired all of the outstanding shares of Innolight Innovative Laser and Systemtechnik GmbH ("Innolight") for approximately $18.3 million, excluding transaction costs. Innolight provides a core technology building block for an emerging class of commercial, sub-nanosecond lasers for microelectronics manufacturing. Its semiconductor-based architecture delivers pulsed output that can be amplified by conventional or fiber amplifiers to ultimately deliver infrared, green or ultraviolet light capable of processing a range of materials. Innolight has been included in our Specialty Lasers and Systems segment.

Our preliminary allocation of the purchase price is as follows (in thousands):

Tangible assets	$	2,510
Goodwill	8,253
Intangible assets:
Existing technology	8,500
In-process R&D	430
Trade name	100
Customer lists	2,800
Deferred tax liabilities	(3,777		)
Liabilities assumed	(480		)
Total	$	18,336

Results of operations for the business have been included in our consolidated financial statements subsequent to the date of acquisition and pro forma results of operations in accordance with authoritative guidance for prior periods have not been presented because the effect of the acquisition was not material to our prior period consolidated financial results.

None of the goodwill from this purchase is deductible for tax purposes.

The identifiable intangible assets are being amortized over their respective useful lives of six to seven years.

IPR&D consists of two projects that have not yet reached technological feasibility. Acquired IPR&D assets are initially recognized at fair value and are classified as indefinite-lived assets until the successful completion or abandonment of the associated research and development efforts. The value assigned to IPR&D was determined by considering the value of the products under development to the overall development plan, estimating the resulting net cash flows from the projects when completed and discounting the net cash flows to their present value. During the development period, these assets will not be amortized as charges to earnings; instead these assets will be subject to periodic impairment testing. Upon successful completion of the development process for the acquired IPR&D projects, the assets would then be considered finite-lived intangible assets and amortization of the assets will commence. The projects have not been completed as of December 29, 2012.

We expensed $0.1 million of acquisition-related costs as selling, general and administrative expenses in our consolidated statements of operations in the three months endedDecember 29, 2012 and expensed $0.1 million of acquisition-related costs as selling, general and administrative expenses in our consolidated statements of operations in fiscal 2012.

Fiscal 2012 and Fiscal 2011 acquisitions

As more fully described in our Annual Report on Form 10-K for our fiscal year ended September 29, 2012, we acquired two companies in fiscal 2012 and fiscal 2011:

• We acquired MiDAZ Lasers Ltd. ("Midaz") in the fourth quarter of fiscal 2012 for approximately $3.8 million in cash and recorded goodwill and intangible assets of approximately $4.6 million.

• We acquired Hypertronics Pte Ltd (“Hypertronics”) in the second quarter of fiscal 2011 for approximately $14.5 million in cash and recorded goodwill and intangible assets of approximately $11.8 million.

Both businesses have been included in our Specialty Lasers and Systems segment. Results of operations for these businesses have been included in our consolidated financial statements subsequent to the date of their acquisition and pro forma results of operations in accordance with authoritative guidance for prior periods have not been presented because the effect of these acquisitions was not material to our prior period consolidated financial results.

During the second quarter of fiscal 2012, we determined that one of the hardware projects classified as IPR&D acquired from Hypertronics would not be completed.  As a result, $0.2 million was expensed in the second fiscal quarter for that project.  During the fourth quarter of fiscal 2012, we decided to no longer pursue orders of Hypertronics' legacy products and thus determined that an impairment review of the intangible assets was required. As a result of our analysis, we determined that the intangible assets were fully impaired and that the remaining hardware projects classified as IPR&D acquired from Hypertronics would not be completed.  As a result, we recorded a $4.0 million charge in amortization expense in the fourth quarter of fiscal 2012. We also wrote off $0.3 million of inventory unique to these products that were not expected to be resold.

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Goodwill and Intangible Assets (Goodwill) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 29, 2012
Goodwill [Line Items]
Goodwill, Acquired During Period	$ 32,881
Goodwill [Roll Forward]
Goodwill, beginning of period	77,689
Translation adjustments and other	1,054
Goodwill, end of period	111,624
Commercial Lasers and Components
Goodwill [Line Items]
Goodwill, Acquired During Period	0
Goodwill [Roll Forward]
Goodwill, beginning of period	6,363
Translation adjustments and other	0
Goodwill, end of period	6,363
Specialty Laser Systems
Goodwill [Line Items]
Goodwill, Acquired During Period	32,881
Goodwill [Roll Forward]
Goodwill, beginning of period	71,326
Translation adjustments and other	1,054
Goodwill, end of period	$ 105,261

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Short-Term Investments (Tables)

3 Months Ended

Dec. 29, 2012

Cash, Cash Equivalents, and Short-term Investments [Abstract]

Schedule of cash, cash equivalents and short-term investments

Cash, cash equivalents and short-term investments consist of the following (in thousands):

	December 29, 2012
	Cost Basis		Unrealized Gains		Unrealized Losses			Fair Value
Cash and cash equivalents	$	87,980	$	16	$	—		$	87,996
Short-term investments:
Available-for-sale securities:
Certificates of deposit	$	2,008	$	13	$	—		$	2,021
U.S. Treasury and agency obligations	81,272		359		—			81,631
Corporate notes and obligations	8,048		82		(1		)	8,129
Total short-term investments	$	91,328	$	454	$	(1	)	$	91,781

	September 29, 2012
	Cost Basis		Unrealized Gains		Unrealized Losses			Fair Value
Cash and cash equivalents	$	67,752	$	9	$	—		$	67,761
Short-term investments:
Available-for-sale securities:
Certificates of deposit	$	2,017	$	2	$	—		$	2,019
U.S. Treasury and agency obligations	108,284		666		(2		)	108,948
International government obligations	2,004		14		—			2,018
Corporate notes and obligations	41,912		272		(1		)	42,183
Commercial paper	2,000		—		—			2,000
Total short-term investments	$	156,217	$	954	$	(3	)	$	157,168

Schedule of amortized cost and estimated fair value of available-for-sale investments in debt securities

The amortized cost and estimated fair value of available-for-sale investments in debt securities as of December 29, 2012 and September 29, 2012 classified as short-term investments on our condensed consolidated balance sheet were as follows (in thousands):

	December 29, 2012				September 29, 2012
	Amortized Cost		Estimated Fair Value		Amortized Cost		Estimated Fair Value
Investments in available-for-sale debt securities due in less than one year	$	89,320	$	89,760	$	154,200	$	155,149

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Derivative Instruments and Hedging Activities (Tables)

3 Months Ended

Dec. 29, 2012

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of outstanding notional contract and fair value amount of hedge contracts

The outstanding notional contract and fair value amounts of hedge contracts, with maximum maturity of two months, are as follows (in thousands):

	U.S. Notional Contract Value						U.S. Notional Fair Value
	December 29, 2012			September 29, 2012			December 29, 2012			September 29, 2012
Euro currency hedge contracts
Purchase	$	65,490		$	61,779		$	66,543		$	62,404
Korean Won currency hedge contracts
Sell	$	(26,058	)	$	(39,039	)	$	(26,106	)	$	(39,559	)
Other foreign currency hedge contracts
Sell	$	(24,323	)	$	(20,452	)	$	(24,235	)	$	(20,578	)

Schedule of location and amount of non-designated derivative instruments

The amount of non-designated derivative instruments’ gain in the Condensed Consolidated Statements of Operations included in other income (expense) for the three months endedDecember 29, 2012 and December 31, 2011 is as follows (in thousands):

	Amount of Gain or (Loss) Recognized in
	Income on Derivatives
	Three Months Ended
	December 29, 2012
Derivatives not designated as hedging instruments
Foreign exchange contracts	$	1,900

	Amount of Gain or (Loss) Recognized in
	Income on Derivatives
	Three Months Ended
	December 31, 2011
Derivatives not designated as hedging instruments
Foreign exchange contracts	$	1,982

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Segment Information Major Customers (Details) (Customer Concentration Risk [Member])			3 Months Ended			3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended
	Dec. 29, 2012 customers	Sep. 29, 2012 customers	Dec. 29, 2012 Sales [Member] customers	Dec. 31, 2011 Sales [Member] customers	Dec. 29, 2012 Accounts Receivable [Member]	Dec. 29, 2012 Customer 1 [Member] Sales [Member]	Sep. 29, 2012 Customer 1 [Member] Accounts Receivable [Member]	Dec. 29, 2012 Customer 2 [Member] Sales [Member]	Sep. 29, 2012 Customer 2 [Member] Accounts Receivable [Member]
Concentration Risk [Line Items]
Number of Customers for Concentration of Risk			2	1
Concentration Risk, Percentage						10.90%	14.90%	10.20%	14.80%
Number of Customers, Concentration Risk, Percentage				15.60%	12.00%
Number of Customers, Concentration Risk, Accounts Receivable	1	2

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Goodwill and Intangible Assets (Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Sep. 29, 2012
Finite-Lived Intangible Assets [Line Items]
Amortization expense for intangible assets	$ 1,181	$ 1,636
Finite-Lived Intangible Assets, Net [Abstract]
Intangible Assets, Gross Carrying Amount	105,106		63,844
Intangible Assets, Accumulated Amortization	(54,979)		(54,371)
Intangible Assets, Net	50,127		9,473
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
2013 (remainder)	8,644
2014	9,461
2015	8,983
2016	8,583
2017	7,587
2018	4,449
Thereafter	2,420
Intangible Assets, Net	50,127		9,473
Customer lists
Finite-Lived Intangible Assets, Net [Abstract]
Intangible Assets, Gross Carrying Amount	17,254		7,849
Intangible Assets, Accumulated Amortization	(5,936)		(5,666)
Intangible Assets, Net	11,318		2,183
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
Intangible Assets, Net	11,318		2,183
Trade name
Finite-Lived Intangible Assets, Net [Abstract]
Intangible Assets, Gross Carrying Amount	3,405		3,050
Intangible Assets, Accumulated Amortization	(2,878)		(2,749)
Intangible Assets, Net	527		301
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
Intangible Assets, Net	527		301
Backlog
Finite-Lived Intangible Assets, Net [Abstract]
Intangible Assets, Gross Carrying Amount	1,000		0
Intangible Assets, Accumulated Amortization	0		0
Intangible Assets, Net	1,000		0
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
Intangible Assets, Net	1,000		0
Non-compete agreements
Finite-Lived Intangible Assets, Net [Abstract]
Intangible Assets, Gross Carrying Amount	691		689
Intangible Assets, Accumulated Amortization	(668)		(661)
Intangible Assets, Net	23		28
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
Intangible Assets, Net	23		28
Production know-how
Finite-Lived Intangible Assets, Net [Abstract]
Intangible Assets, Gross Carrying Amount	0		910
Intangible Assets, Accumulated Amortization	0		(838)
Intangible Assets, Net	0		72
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
Intangible Assets, Net	0		72
Existing technology
Finite-Lived Intangible Assets [Line Items]
Amortization expense for intangible assets	900	1,200
Existing technology
Finite-Lived Intangible Assets, Net [Abstract]
Intangible Assets, Gross Carrying Amount	80,517		51,346
Intangible Assets, Accumulated Amortization	(45,497)		(44,457)
Intangible Assets, Net	35,020		6,889
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
Intangible Assets, Net	35,020		6,889
In-process research and development
Finite-Lived Intangible Assets, Net [Abstract]
Intangible Assets, Gross Carrying Amount	2,239		0
Intangible Assets, Accumulated Amortization	0		0
Intangible Assets, Net	2,239		0
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
Intangible Assets, Net	$ 2,239		$ 0

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Goodwill and Intangible Assets (Tables)

3 Months Ended

Dec. 29, 2012

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of changes in carrying amount of goodwill by segment

The changes in the carrying amount of goodwill by segment for the period from September 29, 2012 to December 29, 2012 are as follows (in thousands):

	Specialty Lasers and Systems		Commercial Lasers and Components		Total
Balance as of September 29, 2012	$	71,326	$	6,363	$	77,689
Additions (See Note 3)	32,881		—		32,881
Translation adjustments and other	1,054		—		1,054
Balance as of December 29, 2012	$	105,261	$	6,363	$	111,624

Schedule of components of amortizable intangible assets

Components of our amortizable intangible assets are as follows (in thousands):

	December 29, 2012							September 29, 2012
	Gross Carrying Amount		Accumulated Amortization			Net		Gross Carrying Amount		Accumulated Amortization			Net
Existing technology	$	80,517	$	(45,497	)	$	35,020	$	51,346	$	(44,457	)	$	6,889
Customer lists	17,254		(5,936		)	11,318		7,849		(5,666		)	2,183
Trade name	3,405		(2,878		)	527		3,050		(2,749		)	301
Order backlog (1)	1,000		—			1,000		—		—			—
Non-compete agreement	691		(668		)	23		689		(661		)	28
Production know-how (1)	—		—			—		910		(838		)	72
In-process research & development	2,239		—			2,239		—		—			—
Total	$	105,106	$	(54,979	)	$	50,127	$	63,844	$	(54,371	)	$	9,473

Schedule of estimated amortization expense

At December 29, 2012, estimated amortization expense for the remainder of fiscal 2013, the next five succeeding fiscal years and all fiscal years thereafter are as follows (in thousands):

	Estimated Amortization Expense
2013 (remainder)	$	8,644
2014	9,461
2015	8,983
2016	8,583
2017	7,587
2018	4,449
Thereafter	2,420
Total	$	50,127

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Balance Sheet Details (Tables)

3 Months Ended

Dec. 29, 2012

Balance Sheet Related Disclosures [Abstract]

Schedule of inventories

Inventories consist of the following (in thousands):

	December 29, 2012		September 29, 2012
Purchased parts and assemblies	$	48,660	$	46,526
Work-in-process	65,403		60,171
Finished goods	54,939		53,416
Total inventories	$	169,002	$	160,113

Schedule of prepaid expenses and other assets

Prepaid expenses and other assets consist of the following (in thousands):

	December 29, 2012		September 29, 2012
Prepaid and refundable income taxes	$	9,994	$	20,634
Other taxes receivable	28,609		25,607
Prepaid expenses and other	17,008		15,489
Total prepaid expenses and other assets	$	55,611	$	61,730

Schedule of other assets

Other assets consist of the following (in thousands):

	December 29, 2012		September 29, 2012
Assets related to deferred compensation arrangements	$	22,450	$	21,990
Deferred tax assets	39,189		37,160
Other assets	5,657		4,879
Total other assets	$	67,296	$	64,029

Schedule of Other Current Liabilities

Other current liabilities consist of the following (in thousands):

	December 29, 2012		September 29, 2012
Accrued payroll and benefits	$	28,013	$	28,100
Deferred income	17,027		17,465
Reserve for warranty	18,510		17,442
Accrued expenses and other	11,613		10,445
Other taxes payable	22,673		15,457
Customer deposits	3,703		1,830
Total other current liabilities	$	101,539	$	90,739

Schedule of components of restructuring charges, payments and other deductions

Schedule of components of reserve for warranty costs

Components of the reserve for warranty costs during the first three months of fiscal 2013 and 2012 were as follows (in thousands):

	Three Months Ended
	December 29, 2012			December 31, 2011
Beginning balance	$	17,442		$	16,704
Additions related to current period sales	5,777			6,374
Warranty costs incurred in the current period	(6,040		)	(7,249		)
Accruals resulting from acquisitions	1,735			—
Adjustments to accruals related to foreign exchange and other	(404		)	206
Ending balance	$	18,510		$	16,035

Schedule of Other Long-term liabilities

Other long-term liabilities consist of the following (in thousands):

	December 29, 2012		September 29, 2012
Long-term taxes payable	$	19,695	$	21,281
Deferred compensation	23,286		22,816
Deferred tax liabilities	13,676		726
Deferred income	2,303		2,191
Asset retirement obligations liability	2,021		2,029
Other long-term liabilities	6,288		6,283
Total other long-term liabilities	$	67,269	$	55,326

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Recent Accounting Standards

3 Months Ended

Dec. 29, 2012

Accounting Policies [Abstract]

Recent Accounting Standards

RECENT ACCOUNTING STANDARDS

Adoption of New Accounting Pronouncements

In July 2012, the Financial Accounting Standards Board (“FASB”) amended existing guidance related to goodwill and other intangible assets by giving an entity testing an indefinite-lived intangible asset for impairment the option to first assess qualitative factors to determine whether it is more likely than not (that is, a likelihood of more than 50 percent) that the fair value of an intangible asset is less than its carrying amount. If the entity determines, on the basis of qualitative factors, that the fair value of the indefinite-lived intangible asset is not more likely than not impaired, the entity would not need to calculate the fair value of the asset. The guidance does not revise the requirement to test indefinite-lived intangible assets annually for impairment or to test these assets for impairment between annual tests if there is a change in events or circumstances. This amended guidance was effective for annual and interim impairment tests performed for fiscal years beginning after September 15, 2012. We adopted this authoritative guidance in the first quarter of fiscal 2013. As we did not have any indefinite-lived intangible assets recorded in our consolidated balance sheet, the implementation of this authoritative guidance did not have a material impact on our consolidated financial position, results of operations and cash flows in connection with our impairment testing.

Recently Issued Accounting Pronouncement

In December 2011, the FASB issued guidance which requires an entity to disclose information about offsetting and related arrangements to enable financial statement users to evaluate the effect or potential effect of netting arrangements, including rights of setoff associated with the entity's recognized financial assets and liabilities, on the entity's financial position. The new disclosures will enable financial statement users to compare balance sheets prepared under U.S. GAAP and International Financial Reporting Standards ("IFRS"), which are subject to different offsetting models. The disclosures will be limited to financial instruments (and derivatives) subject to enforceable master netting arrangements or similar agreements. Similar agreements include derivative clearing agreements, global master repurchase agreements, and global master securities lending agreements. Financial instruments and transactions that will be subject to the disclosure requirements may include derivatives, repurchase and reverse repurchase agreements, and securities lending and borrowing arrangements. An entity should provide the disclosures required by those amendments retrospectively for all comparative periods presented. The guidance is effective for us beginning in fiscal 2014. We are currently evaluating the potential impact, if any, of the adoption of this guidance on our consolidated financial position, results of operations and cash flows.

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Stock-Based Compensation (Tables)

3 Months Ended

Dec. 29, 2012

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of weighted-average assumptions used to estimate fair value of stock options granted and shares purchased

The fair values of shares purchased under the Employee Stock Purchase Plan (“ESPP”) for the three months endedDecember 29, 2012 and December 31, 2011, respectively, were estimated using the following weighted-average assumptions:

	Employee Stock Purchase Plan
	Three Months Ended
	December 29, 2012			December 31, 2011
Expected life in years	0.5			0.5
Expected volatility	34.8		%	49.3		%
Risk-free interest rate	0.2		%	0.1		%
Expected dividend yield	1.0		%	—
Weighted average fair value per share	$	10.60		$	14.93

There were no stock options granted during the three months endedDecember 29, 2012 and December 31, 2011.

Schedule of weighted average assumptions of performance units

The weighted average fair value for these performance units was determined using a Monte Carlo simulation model incorporating the following weighted average assumptions:

	Three Months Ended
	December 29, 2012		December 31, 2011
Risk-free interest rate	0.33	%	0.39	%
Volatility	37.9	%	41.8	%
Weighted average fair value	$48.48		$71.59

Schedule of stock-based compensation expense

The following table shows total stock-based compensation expense and related tax benefits included in the condensed consolidated statements of operations for the three months endedDecember 29, 2012 and December 31, 2011 (in thousands):

	Three Months Ended
	December 29, 2012			December 31, 2011
Cost of sales	$	435		$	369
Research and development	476			393
Selling, general and administrative	4,083			3,260
Income tax benefit	(1,483		)	(1,328		)
	$	3,511		$	2,694

Schedule of stock option activity

The following is a summary of option activity for our Stock Option Plans (in thousands, except per share amounts and weighted average remaining contractual term in years):

	Number of Shares		Weighted Average Exercise Price Per Share		Weighted Average Remaining Contractual Term in Years	Aggregate Intrinsic Value
Outstanding at September 29, 2012	641		$	27.86
Granted	—		—
Exercised	(68	)	26.96
Forfeitures	—		—
Expirations	—		—
Outstanding at December 29, 2012	573		$	27.97	3.2 years	$	12,168
Vested and expected to vest at December 29, 2012	573		$	27.97	3.2 years	$	12,168
Exercisable at December 29, 2012	556		$	27.47	3.0 years	$	12,083

Schedule of restricted stock award and restricted stock unit activity

The following table summarizes the activity of our time based and market- performance based restricted stock units for the first three months of fiscal 2013 (in thousands, except per share amounts):

	Time Based Restricted Stock Units				Market-Based Performance Restricted Stock Units
	Number of Shares(1)		Weighted Average Grant Date Fair Value		Number of Shares(2)		Weighted Average Grant Date Fair Value
Nonvested stock at September 29, 2012	440		$	47.81	152		$	57.55
Granted	242		42.28		97		48.48
Vested	(217	)	42.35		(28	)	49.50
Forfeited	—		—		(5	)	49.23
Nonvested stock at December 29, 2012	465		$	47.48	216		$	54.73

__________________________________________

(1)Service-based restricted stock vested during each fiscal year.

(2)Performance-based awards and units included at 100% of target goal; under the terms of the awards, the recipient may earn between 0% and 200% of the award.

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(Notional and Fair Value) (Details) (USD $) In Thousands, unless otherwise specified							3 Months Ended
	Dec. 29, 2012 Euro currency hedge contracts	Sep. 29, 2012 Euro currency hedge contracts	Dec. 29, 2012 Korea (South), Won	Sep. 29, 2012 Korea (South), Won	Dec. 29, 2012 Other foreign currency hedge contracts	Sep. 29, 2012 Other foreign currency hedge contracts	Dec. 29, 2012 Forward contracts Derivatives not designated as hedging instruments
Derivatives, Fair Value [Line Items]
Maximum maturities of foreign currency derivative instruments (in months)							2 months
U.S. Notional Contract Value, Purchase	$ 65,490	$ 61,779
U.S. Notional Fair Value, Purchase	66,543	62,404
U.S. Notional Contract Value, Sell			(26,058)	(39,039)	(24,323)	(20,452)
U.S. Notional Fair Value, Sell			$ (26,106)	$ (39,559)	$ (24,235)	$ (20,578)

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Stock Repurchases (Details) (USD $)	3 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Dec. 29, 2012 Oct4repurchase [Member]	Oct. 04, 2012 Oct4repurchase [Member] M
Equity, Class of Treasury Stock [Line Items]
Payments for Repurchase of Common Stock	$ 0	$ 20,665,000	$ 25,000,000
Period of repurchase program from the date of authorization (in months)				12
Common Stock, Dividends, Per Share, Cash Paid	$ 1.00
Dividends, Common Stock, Cash	$ 24,000,000

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Condensed Consolidated Statements of Operations (unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Dec. 29, 2012	Dec. 31, 2011
Net sales	$ 183,202	$ 190,767
Cost of sales	105,567	110,408
Gross profit	77,635	80,359
Operating expenses:
Research and development	19,301	18,779
Selling, general and administrative	36,982	34,631
AmortizationNetofCostofSales	854
Amortization of Intangible Assets	1,181	1,636
Total operating expenses	57,137	55,046
Income from operations	20,498	25,313
Other income (expense):
Interest and dividend income	50	202
Interest expense	(12)	(2)
Other—net	(1,475)	318
Total other income (expense), net	(1,437)	518
Income before income taxes	19,061	25,831
Provision for income taxes	4,908	8,780
Net income	$ 14,153	$ 17,051
Net income per share:
Basic	$ 0.60	$ 0.73
Diluted	$ 0.58	$ 0.71
Shares used in computation:
Basic	23,770	23,462
Diluted	24,222	23,961

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Balance Sheet Details (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 29, 2012 M	Dec. 31, 2011	Sep. 29, 2012
Inventory, Net [Abstract]
Purchased parts and assemblies	$ 48,660		$ 46,526
Work-in-process	65,403		60,171
Finished goods	54,939		53,416
Total inventories	169,002		160,113
Prepaid Expense and Other Assets, Current [Abstract]
Prepaid and refundable income taxes	9,994		20,634
Other Taxes Receivable	28,609		25,607
Prepaid expenses and other	17,008		15,489
Total prepaid expenses and other assets	55,611		61,730
Other Assets, Noncurrent Disclosure [Abstract]
Assets related to deferred compensation arrangements	22,450		21,990
Deferred tax assets	39,189		37,160
Other assets	5,657		4,879
Total other assets	67,296		64,029
Other Liabilities, Current [Abstract]
Accrued payroll and benefits	28,013		28,100
Deferred income	17,027		17,465
Reserve for warranty	18,510		17,442
Accrued expenses and other	11,613		10,445
Other taxes payable	22,673		15,457
Customer deposits	3,703		1,830
Total other current liabilities	101,539		90,739
Product Warranties Disclosures [Abstract]
Weighted average warranty period (months)	15
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Beginning balance	17,442	16,704
Additions related to current period sales	5,777	6,374
Warranty costs incurred in the current period	(6,040)	(7,249)
Accruals resulting from acquisition	1,735	0
Product Warranty Accrual, Currency Translation, Increase (Decrease)	(404)	206
Ending balance	18,510	16,035
Other Liabilities, Noncurrent [Abstract]
Long-term taxes payable	19,695		21,281
Deferred compensation	23,286		22,816
Deferred tax liabilities	13,676		726
Deferred income	2,303		2,191
Asset retirement obligations	2,021		2,029
Other long-term liabilities	6,288		6,283
Total other long-term liabilities	$ 67,269		$ 55,326

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Condensed Consolidated Statements of Cash Flows (unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 29, 2012	Dec. 31, 2011
Cash flows from operating activities:
Net income	$ 14,153	$ 17,051
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	6,108	5,828
Amortization of Intangible Assets	1,181	1,636
Deferred income taxes	(275)	(527)
Stock-based compensation	4,994	4,022
Excess tax benefit from stock-based compensation arrangements	0	(1,681)
Other non-cash (income) expense	522	1,151
Changes in assets and liabilities, net of effect of acquisitions:
Accounts receivable	19,452	9,161
Inventories	2,113	2,671
Prepaid expenses and other assets	(4,281)	(7,321)
Other assets	(666)	(497)
Accounts payable	(445)	(4,715)
Income taxes payable/receivable	(410)	(8,210)
Other current liabilities	4,056	(3,110)
Other long-term liabilities	821	676
Net cash provided by operating activities	47,323	16,135
Cash flows from investing activities:
Purchases of property and equipment	(3,901)	(8,139)
Proceeds from dispositions of property and equipment	0	26
Purchases of available-for-sale securities	(63,630)	(12,593)
Proceeds from sales and maturities of available-for-sale securities	128,526	30,188
Acquisition of businesses, net of cash acquired	(67,289)	0
Net cash used in investing activities	(6,294)	9,482
Cash flows from financing activities:
Short-term borrowings	0	4,786
Repayments of short-term borrowing	0	(4,786)
Net change in capital lease obligations	(4)	(4)
Issuance of common stock under employee stock option and purchase plans	4,712	4,568
Cash dividend paid on common stock	(24,040)	0
Repurchase of common stock	0	(20,665)
Net settlement of restricted common stock	(4,046)	(4,413)
Excess tax benefits from stock-based compensation arrangements	0	1,681
Net cash provided by (used in) financing activities	(23,378)	(18,833)
Effect of exchange rate changes on cash and cash equivalents	2,584	(6,183)
Net increase (decrease) in cash and cash equivalents	20,235	601
Cash and cash equivalents, beginning of period	67,761	167,061
Cash and cash equivalents, end of period	87,996	167,662
Cash paid during the period for:
Interest	12	3
Income taxes	6,150	25,818
Cash received during the period for:
Income taxes	405	9,662
Non-cash investing and financing activities:
Unpaid property and equipment	$ 1,000	$ 1,933

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Segment Information (Tables)

3 Months Ended

Dec. 29, 2012

Segment Reporting [Abstract]

Schedule of sales and income (loss) from operations

The following table provides net sales and income (loss) from operations for our operating segments (in thousands):

	Three Months Ended
	December 29, 2012			December 31, 2011
Net sales:
Specialty Laser Systems	$	131,460		$	135,617
Commercial Lasers and Components	51,742			55,150
Total net sales	$	183,202		$	190,767
Income (loss) from operations:
Specialty Laser Systems	$	30,334		$	31,030
Commercial Lasers and Components	1,825			4,020
Corporate and other	(11,661		)	(9,737		)
Total income from operations	$	20,498		$	25,313

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Income Taxes

3 Months Ended

Dec. 29, 2012

Income Tax Disclosure [Abstract]

Income Taxes

INCOMETAXES

Income tax expense includes a provision for federal, state and foreign taxes based on the annual estimated effective tax rate applicable to us and our subsidiaries, adjusted for items which are considered discrete to the period. Our estimated effective tax rate for the three months endedDecember 29, 2012 was 25.7%. Our effective tax rate for the three months endedDecember 29, 2012 was lower than the statutory rate of 35%primarily due to permanent differences related to the benefit of income subject to foreign tax rates that are lower than U.S. tax rates, the benefit of foreign tax credits and the benefit of releasing foreign tax reserves accrued under ASC 740-10 (formerly FASB Financial Interpretation No. 48, "Accounting for Uncertainty in Income Taxes") and related interest. These amounts are partially offset by deemed dividend inclusions under the Subpart F tax rules, stock compensation not deductible for tax purposes and limitations on the deductibility of compensation under IRC Section 162(m).

Determining the consolidated provision for income taxes, income tax liabilities and deferred tax assets and liabilities involves judgment. We calculate and provide for income taxes in each of the tax jurisdictions in which we operate, which involves estimating current tax exposures as well as making judgments regarding the recoverability of deferred tax assets in each jurisdiction. The estimates used could differ from actual results, which may have a significant impact on operating results in future periods.

As of December 29, 2012, the total amount of gross unrecognized tax benefits was $25.8 million including gross interest and penalties of $1.3 million, of which $16.3 million, if recognized, would affect our effective tax rate. Our total gross unrecognized tax benefits, net of certain deferred tax assets, were classified as other long-term liabilities in the condensed consolidated balance sheets.

Our policy is to include interest and penalties related to unrecognized tax benefits within the provision for income taxes. As of December 29, 2012, the total amount of gross interest and penalties accrued was $1.3 million, which is classified as other long-term liabilities in the condensed consolidated balance sheets.

We are subject to taxation and file income tax returns in the U.S. federal jurisdiction and in many state and foreign jurisdictions. For U.S. federal income tax purposes, all years prior to 2009 are closed to examination. In our major state jurisdiction and our major foreign jurisdictions, the years prior to 2008 and 2006, respectively, are closed to examination. In December 2011 and January 2012, our three German subsidiaries received notices of tax audits for the fiscal years 2006 through 2010. These audits are currently in process.

Management believes that it has adequately provided for any adjustments that may result from tax examinations. The Company regularly engages in discussions and negotiations with tax authorities regarding tax matters in various jurisdictions. It is reasonably possible that certain federal, foreign and state tax matters may be concluded in the next 12 months. Although the timing of the resolution and/or closure of audits is highly uncertain, it is reasonably possible that the balance of net unrecognized tax benefits including interest and penalties at December 29, 2012 could be reduced by approximately $0.2 million to $2.4 million in the next 12 months.

The American Taxpayer Relief Act of 2012 (“the Act”), was enacted on January 2, 2013.  Under the Act, the federal research and development credit was retroactively extended for amounts paid or incurred after December 31, 2011 through December 31, 2013.  The look-through treatment of payments between related controlled foreign corporations under the Subpart F rule was also retroactively extended for the same time period. The effects of the change in the tax law will be recognized in our second quarter of fiscal 2013, which is the quarter that the law was enacted.  Accordingly, we anticipate that prior period research and development credits of approximately $1.0 million to $2.5 million from the last three quarters of fiscal 2012 and the first quarter of fiscal 2013 will be recognized in the second quarter of fiscal 2013. In addition, we also anticipate a reduction in the tax impact of the Subpart F income inclusion of up to approximately $0.5 million.

Deferred Income Taxes

As of December 29, 2012, our condensed consolidated balance sheet included net deferred tax assets, before valuation allowance, of approximately $55.2 million, which consists of tax credits carryovers, accruals and reserves, competent authority offset to transfer pricing tax reserves, employee stock-based compensation expenses and certain other liabilities. Management periodically evaluates the realizability of our net deferred tax assets based on all available evidence, both positive and negative. The realization of net deferred tax assets is solely dependent on our ability to generate sufficient future taxable income in the applicable jurisdictions during periods prior to the expiration of tax statutes to fully utilize these assets.  After evaluating all available evidence, we have determined that it is “more likely than not” that a portion of the deferred tax assets would not be realized and we have a total valuation allowance of $9.1 million as of December 29, 2012.  We intend to maintain the valuation allowance until sufficient positive evidence exists to support reversal of the valuation allowance.

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Basis of Presentation (Details)	3 Months Ended		12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Sep. 28, 2013	Sep. 29, 2012
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of weeks in fiscal period	P13W	P13W	P52W	P52W

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Basis of Presentation (Policies)

3 Months Ended

Dec. 29, 2012

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Fiscal Period, Policy

Our fiscal year ends on the Saturday closest to September 30 and our first fiscal quarters include 13 weeks of operations in each fiscal year presented. Fiscal years 2013 and 2012 each include 52 weeks.

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Basis of Presentation

3 Months Ended

Dec. 29, 2012

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation

BASIS OF PRESENTATION

The accompanying unaudited condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) have been condensed or omitted pursuant to such rules and regulations. These interim condensed consolidated financial statements and notes thereto should be read in conjunction with the Coherent, Inc. (referred to herein as the “Company,” “we,” “our,” “us” or “Coherent”) consolidated financial statements and notes thereto filed on Form 10-K for the fiscal year ended September 29, 2012. In the opinion of management, all adjustments necessary for a fair presentation of financial condition and results of operation as of and for the periods presented have been made and include only normal recurring adjustments. Interim results of operations are not necessarily indicative of results to be expected for the year or any other interim periods presented therein. Our fiscal year ends on the Saturday closest to September 30 and our first fiscal quarters include 13 weeks of operations in each fiscal year presented. Fiscal years 2013 and 2012 each include 52 weeks.

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Statement of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 29, 2012	Dec. 31, 2011
Net income	$ 14,153	$ 17,051
Other Comprehensive Income (Loss) [Abstract]
Translation adjustment	4,120	(10,321)
Changes in unrealized gains on available-for-sale securities, net of taxes	1	16
Other Comprehensive Income (Loss), Net of Tax	4,121	(10,305)
Comprehensive income (loss)	18,274	6,746
Translation Adjustment Functional to Reporting Currency, Tax Benefit (Expense)	$ (19)	$ 104

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Commitments and Contingencies

3 Months Ended

Dec. 29, 2012

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

COMMITMENTS AND CONTINGENCIES

We are subject to legal claims and litigation arising in the ordinary course of business, such as product liability, employment or intellectual property claims. The outcome of any such matters is currently not determinable. Although we do not expect that such legal claims and litigation will ultimately have a material adverse effect on our consolidated financial position or results of operations, an adverse result in one or more matters could negatively affect our results in the period in which they occur.

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Document and Entity Information	3 Months Ended
	Dec. 29, 2012	Feb. 01, 2013
DEI [Abstract]
Entity Registrant Name	COHERENT INC
Trading Symbol	COHR
Entity Central Index Key	0000021510
Document Type	10-Q
Document Period End Date	Dec. 29, 2012
Amendment Flag	false
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q1
Current Fiscal Year End Date	--09-28
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		24,222,144

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Accumulated Other Comprehensive Income

3 Months Ended

Dec. 29, 2012

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Accumulated Other Comprehensive Income (Loss)

ACCUMULATED OTHER COMPREHENSIVE INCOME

Accumulated other comprehensive income (net of tax) at December 29, 2012 and September 29, 2012 are substantially comprised of accumulated translation adjustments of $44.6 million and $40.4 million, respectively.

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Condensed Consolidated Balance Sheets (unaudited) (USD $) In Thousands, unless otherwise specified	Dec. 29, 2012	Sep. 29, 2012
Current assets:
Cash and cash equivalents	$ 87,996	$ 67,761
Short-term investments	91,781	157,168
Accounts receivable—net of allowances of $1,769 and $1,443, respectively	126,010	144,345
Inventories	169,002	160,113
Prepaid expenses and other assets	55,611	61,730
Deferred tax assets	21,083	23,368
Total current assets	551,483	614,485
Property and equipment, net	116,574	115,096
Goodwill	111,624	77,689
Intangible assets, net	50,127	9,473
Other assets	67,296	64,029
Total assets	897,104	880,772
Current liabilities:
Current portion of long-term obligations	15	17
Accounts payable	29,396	29,088
Income taxes payable	27,621	33,944
Other current liabilities	101,539	90,739
Total current liabilities	158,571	153,788
Long-term obligations	0	2
Other long-term liabilities	67,269	55,326
Commitments and contingencies (Note 11)
Common stock, par value $.01 per share:
Authorized—500,000 shares, Outstanding—24,041 shares and 23,746 shares, respectively	240	237
Additional paid-in capital	137,079	131,708
Accumulated other comprehensive income	44,576	40,455
Retained earnings	489,369	499,256
Total stockholders’ equity	671,264	671,656
Total liabilities and stockholders’ equity	$ 897,104	$ 880,772

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Short-Term Investments

3 Months Ended

Dec. 29, 2012

Cash, Cash Equivalents, and Short-term Investments [Abstract]

Short-term Investments

SHORT-TERMINVESTMENTS

We consider all highly liquid investments with maturities of three months or less at the time of purchase to be cash equivalents. Investments classified as available-for-sale are reported at fair value with unrealized gains and losses, net of related income taxes, recorded as a separate component of other comprehensive income (“OCI”) in stockholders’ equity until realized. Interest and amortization of premiums and discounts for debt securities are included in interest income. Gains and losses on securities sold are determined based on the specific identification method and are included in other income (expense).

Cash, cash equivalents and short-term investments consist of the following (in thousands):

	December 29, 2012
	Cost Basis		Unrealized Gains		Unrealized Losses			Fair Value
Cash and cash equivalents	$	87,980	$	16	$	—		$	87,996
Short-term investments:
Available-for-sale securities:
Certificates of deposit	$	2,008	$	13	$	—		$	2,021
U.S. Treasury and agency obligations	81,272		359		—			81,631
Corporate notes and obligations	8,048		82		(1		)	8,129
Total short-term investments	$	91,328	$	454	$	(1	)	$	91,781

	September 29, 2012
	Cost Basis		Unrealized Gains		Unrealized Losses			Fair Value
Cash and cash equivalents	$	67,752	$	9	$	—		$	67,761
Short-term investments:
Available-for-sale securities:
Certificates of deposit	$	2,017	$	2	$	—		$	2,019
U.S. Treasury and agency obligations	108,284		666		(2		)	108,948
International government obligations	2,004		14		—			2,018
Corporate notes and obligations	41,912		272		(1		)	42,183
Commercial paper	2,000		—		—			2,000
Total short-term investments	$	156,217	$	954	$	(3	)	$	157,168

At December 29, 2012, gross unrealized losses on our investments with unrealized losses that are not deemed to be other-than-temporarily impaired were $2,000 on corporate notes and obligations of $6.7 million.

The amortized cost and estimated fair value of available-for-sale investments in debt securities as of December 29, 2012 and September 29, 2012 classified as short-term investments on our condensed consolidated balance sheet were as follows (in thousands):

	December 29, 2012				September 29, 2012
	Amortized Cost		Estimated Fair Value		Amortized Cost		Estimated Fair Value
Investments in available-for-sale debt securities due in less than one year	$	89,320	$	89,760	$	154,200	$	155,149

During the three months endedDecember 29, 2012, we received proceeds totaling $56.6 million from the sale of available-for-sale securities and realized gross gains of less than $0.1 million. During the three months endedDecember 31, 2011, we received proceeds totaling $27.5 million from the sale of available-for-sale securities and realized gross gains of less than $0.1 million.

At December 29, 2012, gross unrealized losses on our investments with unrealized losses that are not deemed to be other-than-temporarily impaired were $2,000 on corporate notes and obligations of $6.7 million.

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Derivative Instruments and Hedging Activities

3 Months Ended

Dec. 29, 2012

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Instruments and Hedging Activities Disclosure

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES

All derivatives, whether designated in hedging relationships or not, are recorded on the Condensed Consolidated Balance Sheet at fair value. We enter into foreign exchange forwards to minimize the risks of foreign currency fluctuation of specific assets and liabilities on the balance sheet; these are not designated as hedging instruments. Our derivative contracts do not contain any credit risk related contingent features and do not require collateral or other security to be furnished by us or the counterparties.

We maintain operations in various countries outside of the United States and have foreign subsidiaries that manufacture and sell our products in various global markets. The majority of our sales are transacted in U.S. dollars. However, we do generate revenues in other currencies, primarily the Japanese Yen, the Euro and the Korean Won. As a result, our earnings, cash flows and cash balances are exposed to fluctuations in foreign currency exchange rates. We attempt to limit these exposures through financial market instruments. We utilize derivative instruments, primarily forward contracts with maturities of two months or less, to manage our exposure associated with anticipated cash flows and net asset and liability positions denominated in foreign currencies. Gains and losses on the forward contracts are mitigated by gains and losses on the underlying instruments. We do not use derivative financial instruments for speculative or trading purposes. If a financial counterparty to any of our hedging arrangements experiences financial difficulties or is otherwise unable to honor the terms of the foreign currency hedge, we may experience material financial losses.

For derivative instruments that are not designated as hedging instruments, gains and losses are recognized in other income (expense).

The outstanding notional contract and fair value amounts of hedge contracts, with maximum maturity of two months, are as follows (in thousands):

	U.S. Notional Contract Value						U.S. Notional Fair Value
	December 29, 2012			September 29, 2012			December 29, 2012			September 29, 2012
Euro currency hedge contracts
Purchase	$	65,490		$	61,779		$	66,543		$	62,404
Korean Won currency hedge contracts
Sell	$	(26,058	)	$	(39,039	)	$	(26,106	)	$	(39,559	)
Other foreign currency hedge contracts
Sell	$	(24,323	)	$	(20,452	)	$	(24,235	)	$	(20,578	)

The fair value of our derivative instruments are included in prepaid expenses and other assets and in other current liabilities in our Condensed Consolidated Balance Sheets; such amounts were not material as of December 29, 2012 and September 29, 2012.

The amount of non-designated derivative instruments’ gain in the Condensed Consolidated Statements of Operations included in other income (expense) for the three months endedDecember 29, 2012 and December 31, 2011 is as follows (in thousands):

	Amount of Gain or (Loss) Recognized in
	Income on Derivatives
	Three Months Ended
	December 29, 2012
Derivatives not designated as hedging instruments
Foreign exchange contracts	$	1,900

	Amount of Gain or (Loss) Recognized in
	Income on Derivatives
	Three Months Ended
	December 31, 2011
Derivatives not designated as hedging instruments
Foreign exchange contracts	$	1,982

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Segment Information

3 Months Ended

Dec. 29, 2012

Segment Reporting [Abstract]

Segment Information

SEGMENT INFORMATION

We are organized into two reportable operating segments: Specialty Lasers and Systems (“SLS”) and Commercial Lasers and Components (“CLC”). This segmentation reflects the go-to-market strategies for various products and markets.  SLS develops and manufactures configurable, advanced-performance products largely serving the microelectronics, scientific research and government programs and original equipment manufacturer (“OEM”) components and instrumentation markets. The size and complexity of many of the SLS products generally require service to be performed at the customer site by factory-trained field service engineers. While both segments work to deliver cost-effective solutions, CLC focuses on higher volume products that are offered in set configurations. The product architectures are designed for easy exchange at the point of use such that product service and repairs are generally based upon advanced replacement and depot (i.e., factory) repair. CLC’s primary markets include materials processing, OEM components and instrumentation and microelectronics. 

We have identified SLS and CLC as operating segments for which discrete financial information is available. Both units have dedicated engineering, manufacturing, product business management and product line management functions. A small portion of our outside revenue is attributable to projects and recently developed products for which a segment has not yet been determined. The associated direct and indirect costs are presented in the category of Corporate and other, along with other corporate costs as described below.

Our Chief Executive Officer has been identified as the chief operating decision maker (CODM) as he assesses the performance of the segments and decides how to allocate resources to the segments. Income (loss) from operations is the measure of profit and loss that our CODM uses to assess performance and make decisions. As assets are not a measure used to assess the performance of the company by the CODM, asset information is not tracked or compiled by segment and is not available to be reported in our disclosures. Income (loss) from operations represents the net sales less the cost of sales and direct operating expenses incurred within the operating segments as well as allocated expenses such as shared sales and manufacturing costs. We do not allocate to our operating segments certain operating expenses which we manage separately at the corporate level. These unallocated costs include stock-based compensation and corporate functions (certain research and development, management, finance, legal and human resources) and are included in the results below under Corporate and other in the reconciliation of operating results. Management does not consider unallocated Corporate and other costs in its measurement of segment performance.

The following table provides net sales and income (loss) from operations for our operating segments (in thousands):

	Three Months Ended
	December 29, 2012			December 31, 2011
Net sales:
Specialty Laser Systems	$	131,460		$	135,617
Commercial Lasers and Components	51,742			55,150
Total net sales	$	183,202		$	190,767
Income (loss) from operations:
Specialty Laser Systems	$	30,334		$	31,030
Commercial Lasers and Components	1,825			4,020
Corporate and other	(11,661		)	(9,737		)
Total income from operations	$	20,498		$	25,313

Major Customers

We had two major customers during the three months endedDecember 29, 2012 who accounted for 10.9% and 10.2%, respectively, of consolidated revenue; both customers purchased primarily from our SLS segment. There was one major customer who accounted for 15.6% of consolidated revenue for the three months endedDecember 31, 2011, who purchased primarily from our SLS segment.

We had one major customer who accounted for 12.0% of accounts receivable at December 29, 2012. There were two major customers who accounted for 14.9% and 14.8%, respectively, of accounts receivable at September 29, 2012.

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Earnings per Share

3 Months Ended

Dec. 29, 2012

Earnings Per Share [Abstract]

Earnings Per Share

EARNINGS PER SHARE

Basic earnings per share is computed based on the weighted average number of shares outstanding during the period, excluding unvested restricted stock. Diluted earnings per share is computed based on the weighted average number of shares outstanding during the period increased by the effect of dilutive employee stock awards, including stock options, restricted stock awards and stock purchase plan contracts, using the treasury stock method.

The following table presents information necessary to calculate basic and diluted earnings per share (in thousands, except per share data): 

	Three Months Ended
	December 29, 2012		December 31, 2011
Weighted average shares outstanding —basic	23,770		23,462
Dilutive effect of employee stock awards	452		499
Weighted average shares outstanding—diluted	24,222		23,961
Net income	$	14,153	$	17,051
Net income per basic share	$	0.60	$	0.73
Net income per diluted share	$	0.58	$	0.71

A total of 73,146 and 207,517 potentially dilutive securities have been excluded from the diluted share calculation for the three months endedDecember 29, 2012 and December 31, 2011, respectively, as their effect was anti-dilutive.

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Short-Term Borrowings

3 Months Ended

Dec. 29, 2012

Short-term Debt [Abstract]

Short-term Debt

SHORT-TERM BORROWINGS

We have several lines of credit which allow us to borrow in the applicable local currency. We have a total of $15.8 million of unsecured foreign lines of credit as of December 29, 2012.  At December 29, 2012, we had used $2.3 million of these available foreign lines of credit as guarantees. These credit facilities were used in Europe during the first fiscal quarter of 2013.  In addition, our domestic line of credit consists of a $50.0 million unsecured revolving credit account with Union Bank of California. The agreement will expire on May 31, 2014. The line of credit is subject to covenants related to financial ratios and tangible net worth with which we are currently in compliance.  No amounts have been drawn upon our domestic line of credit as of December 29, 2012.

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Goodwill and Intangible Assets

3 Months Ended

Dec. 29, 2012

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets

GOODWILL AND INTANGIBLEASSETS

Goodwill is tested for impairment on an annual basis and between annual tests if events or circumstances indicate that an impairment loss may have occurred, and we write down these assets when impaired. We perform our annual impairment tests during the fourth quarter of each fiscal year using the opening balance sheet as of the first day of the fourth quarter, with any resulting impairment recorded in the fourth quarter of the fiscal year.

We evaluate long-lived assets and amortizable intangible assets whenever events or changes in business circumstances or our planned use of assets indicate that their carrying amounts may not be fully recoverable or that their useful lives are no longer appropriate. Reviews are performed to determine whether the carrying values of assets are impaired based on comparison to the undiscounted expected future cash flows identifiable to such long-lived and amortizable intangible assets. If the comparison indicates that impairment exists, the impaired asset is written down to its fair value.

During the three months endedDecember 29, 2012, we noted no indications of impairment or triggering events to cause us to review goodwill for potential impairment. We will conduct our annual goodwill testing during the fourth fiscal quarter.

The changes in the carrying amount of goodwill by segment for the period from September 29, 2012 to December 29, 2012 are as follows (in thousands):

	Specialty Lasers and Systems		Commercial Lasers and Components		Total
Balance as of September 29, 2012	$	71,326	$	6,363	$	77,689
Additions (See Note 3)	32,881		—		32,881
Translation adjustments and other	1,054		—		1,054
Balance as of December 29, 2012	$	105,261	$	6,363	$	111,624

Components of our amortizable intangible assets are as follows (in thousands):

	December 29, 2012							September 29, 2012
	Gross Carrying Amount		Accumulated Amortization			Net		Gross Carrying Amount		Accumulated Amortization			Net
Existing technology	$	80,517	$	(45,497	)	$	35,020	$	51,346	$	(44,457	)	$	6,889
Customer lists	17,254		(5,936		)	11,318		7,849		(5,666		)	2,183
Trade name	3,405		(2,878		)	527		3,050		(2,749		)	301
Order backlog (1)	1,000		—			1,000		—		—			—
Non-compete agreement	691		(668		)	23		689		(661		)	28
Production know-how (1)	—		—			—		910		(838		)	72
In-process research & development	2,239		—			2,239		—		—			—
Total	$	105,106	$	(54,979	)	$	50,127	$	63,844	$	(54,371	)	$	9,473

     (1) For accounting purposes, when an intangible asset is fully amortized, it is removed from the disclosure schedule.

Amortization expense for intangible assets for the three months endedDecember 29, 2012 and December 31, 2011 was $1.2 million and $1.6 million, respectively, which includes $0.9 million and $1.2 million, respectively, for amortization of existing technology and production know-how.

At December 29, 2012, estimated amortization expense for the remainder of fiscal 2013, the next five succeeding fiscal years and all fiscal years thereafter are as follows (in thousands):

	Estimated Amortization Expense
2013 (remainder)	$	8,644
2014	9,461
2015	8,983
2016	8,583
2017	7,587
2018	4,449
Thereafter	2,420
Total	$	50,127

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Balance Sheet Details

3 Months Ended

Dec. 29, 2012

Balance Sheet Related Disclosures [Abstract]

Balance Sheet Details

BALANCE SHEET DETAILS

Inventories consist of the following (in thousands):

	December 29, 2012		September 29, 2012
Purchased parts and assemblies	$	48,660	$	46,526
Work-in-process	65,403		60,171
Finished goods	54,939		53,416
Total inventories	$	169,002	$	160,113

Prepaid expenses and other assets consist of the following (in thousands):

	December 29, 2012		September 29, 2012
Prepaid and refundable income taxes	$	9,994	$	20,634
Other taxes receivable	28,609		25,607
Prepaid expenses and other	17,008		15,489
Total prepaid expenses and other assets	$	55,611	$	61,730

Other assets consist of the following (in thousands):

	December 29, 2012		September 29, 2012
Assets related to deferred compensation arrangements	$	22,450	$	21,990
Deferred tax assets	39,189		37,160
Other assets	5,657		4,879
Total other assets	$	67,296	$	64,029

Other current liabilities consist of the following (in thousands):

	December 29, 2012		September 29, 2012
Accrued payroll and benefits	$	28,013	$	28,100
Deferred income	17,027		17,465
Reserve for warranty	18,510		17,442
Accrued expenses and other	11,613		10,445
Other taxes payable	22,673		15,457
Customer deposits	3,703		1,830
Total other current liabilities	$	101,539	$	90,739

There were no restructuring plans or activities in the three months endedDecember 29, 2012. There were no new restructuring charges during fiscal 2012. The closure of our Finland site was completed in the third quarter of fiscal 2011, with the last payments and other reductions completed during fiscal 2012.

We provide warranties on certain of our product sales and reserves for estimated warranty costs are recorded during the period of sale. The determination of such reserves requires us to make estimates of product return rates and expected costs to repair or replace the products under warranty. We currently establish warranty reserves based on historical warranty costs for each product line. The weighted average warranty period covered is approximately 15 months. If actual return rates and/or repair and replacement costs differ significantly from our estimates, adjustments to cost of sales may be required in future periods.

Components of the reserve for warranty costs during the first three months of fiscal 2013 and 2012 were as follows (in thousands):

	Three Months Ended
	December 29, 2012			December 31, 2011
Beginning balance	$	17,442		$	16,704
Additions related to current period sales	5,777			6,374
Warranty costs incurred in the current period	(6,040		)	(7,249		)
Accruals resulting from acquisitions	1,735			—
Adjustments to accruals related to foreign exchange and other	(404		)	206
Ending balance	$	18,510		$	16,035

Other long-term liabilities consist of the following (in thousands):

	December 29, 2012		September 29, 2012
Long-term taxes payable	$	19,695	$	21,281
Deferred compensation	23,286		22,816
Deferred tax liabilities	13,676		726
Deferred income	2,303		2,191
Asset retirement obligations liability	2,021		2,029
Other long-term liabilities	6,288		6,283
Total other long-term liabilities	$	67,269	$	55,326

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Stock-Based Compensation

3 Months Ended

Dec. 29, 2012

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Share-Based Compensation

STOCK-BASED COMPENSATION

Fair Value of Stock Compensation

We recognize compensation expense for all share based payment awards based on the fair value of such awards. The expense is recognized on a straight-line basis over the respective requisite service period of the awards.

Determining Fair Value

The fair values of shares purchased under the Employee Stock Purchase Plan (“ESPP”) for the three months endedDecember 29, 2012 and December 31, 2011, respectively, were estimated using the following weighted-average assumptions:

	Employee Stock Purchase Plan
	Three Months Ended
	December 29, 2012			December 31, 2011
Expected life in years	0.5			0.5
Expected volatility	34.8		%	49.3		%
Risk-free interest rate	0.2		%	0.1		%
Expected dividend yield	1.0		%	—
Weighted average fair value per share	$	10.60		$	14.93

There were no stock options granted during the three months endedDecember 29, 2012 and December 31, 2011.

Restricted stock awards and restricted stock units are independent of option grants and are typically subject to vesting restrictions—either time-based or performance-based conditions for vesting. Until restricted stock vests, shares (including those issuable upon vesting of the applicable restricted stock unit) are subject to forfeiture if employment terminates prior to the release of restrictions and cannot be transferred.

•The service based restricted stock unit awards are generally subject to annual vesting over two to three years from the date of grant.

•The automatic annual grants of restricted stock units for non-employee members of the board of directors vest on February 15 of the calendar year following the grant, which is made following our annual meeting of shareholders.

•The market-based performance restricted stock unit award grants are generally either subject to annual vesting overthreeyears from the date of grant orsubject to a single vest measurement three years from the date of grant, depending upon achievement of performance measurements based on the performance of the Company's Total Shareholder Returns (as defined in the plan) compared with the performance of the Russell 2000 Index.

We grant market-based performance restricted stock units to officers and certain employees. The performance stock unit agreements provide for the award of performance stock units with each unit representing the right to receive one share of our common stock to be issued after the applicable award period. The final number of units awarded for this grant will be determined as of the vesting dates, based upon our total shareholder return over the performance period compared to the Russell 2000 Index and could range from a minimum of no units to a maximum of twice the initial award. The weighted average fair value for these performance units was determined using a Monte Carlo simulation model incorporating the following weighted average assumptions:

	Three Months Ended
	December 29, 2012		December 31, 2011
Risk-free interest rate	0.33	%	0.39	%
Volatility	37.9	%	41.8	%
Weighted average fair value	$48.48		$71.59

We recognize the estimated cost of these awards, as determined under the simulation model, over the related service period, with no adjustment in future periods based upon the actual shareholder return over the performance period.

Stock-Based Compensation Expense

The following table shows total stock-based compensation expense and related tax benefits included in the condensed consolidated statements of operations for the three months endedDecember 29, 2012 and December 31, 2011 (in thousands):

	Three Months Ended
	December 29, 2012			December 31, 2011
Cost of sales	$	435		$	369
Research and development	476			393
Selling, general and administrative	4,083			3,260
Income tax benefit	(1,483		)	(1,328		)
	$	3,511		$	2,694

During the three months endedDecember 29, 2012, $0.6 million was capitalized into inventory for all stock plans, $0.4 million was amortized to cost of sales and $0.7 million remained in inventory at December 29, 2012. During the three months endedDecember 31, 2011, $0.5 million was capitalized into inventory for all stock plans, $0.4 million was amortized to cost of sales and $0.5 million remained in inventory at December 31, 2011.  Management has made an estimate of expected forfeitures and is recognizing compensation costs only for those equity awards expected to vest.

At December 29, 2012, the total compensation cost related to unvested stock-based awards granted to employees under the Company’s stock plans but not yet recognized was approximately $26.2 million, net of estimated forfeitures of $1.3 million. This cost will be amortized on a straight-line basis over a weighted-average period of approximately 1.3 years and will be adjusted for subsequent changes in estimated forfeitures.

At December 29, 2012, total compensation cost related to options to purchase common shares under the ESPP but not yet vested was approximately $0.6 million, which will be recognized over the six month offering period.

The stock option exercise tax benefits reported in the statement of cash flows results from the excess tax benefits arising from tax deductions in excess of the stock-based compensation cost recognized, determined on a grant-by-grant basis. During the first three months of fiscal 2013 and fiscal 2012, we recorded $0.0 and $1.7 million, respectively, of excess tax benefits as cash flows from financing activities.

Stock Options & Awards Activity

The following is a summary of option activity for our Stock Option Plans (in thousands, except per share amounts and weighted average remaining contractual term in years):

	Number of Shares		Weighted Average Exercise Price Per Share		Weighted Average Remaining Contractual Term in Years	Aggregate Intrinsic Value
Outstanding at September 29, 2012	641		$	27.86
Granted	—		—
Exercised	(68	)	26.96
Forfeitures	—		—
Expirations	—		—
Outstanding at December 29, 2012	573		$	27.97	3.2 years	$	12,168
Vested and expected to vest at December 29, 2012	573		$	27.97	3.2 years	$	12,168
Exercisable at December 29, 2012	556		$	27.47	3.0 years	$	12,083

The aggregate intrinsic value is calculated as the difference between the exercise price of the underlying options and the quoted price of our common stock at the end of the reporting period.  There were approximately 0.6 million outstanding options that were in-the-money as of December 29, 2012.  The aggregate intrinsic value of options exercised under the Company’s stock plans for the three months endedDecember 29, 2012 and December 31, 2011 were $1.2 million and $1.6 million, respectively, determined as of the date of option exercise.

The following table summarizes the activity of our time based and market- performance based restricted stock units for the first three months of fiscal 2013 (in thousands, except per share amounts):

	Time Based Restricted Stock Units				Market-Based Performance Restricted Stock Units
	Number of Shares(1)		Weighted Average Grant Date Fair Value		Number of Shares(2)		Weighted Average Grant Date Fair Value
Nonvested stock at September 29, 2012	440		$	47.81	152		$	57.55
Granted	242		42.28		97		48.48
Vested	(217	)	42.35		(28	)	49.50
Forfeited	—		—		(5	)	49.23
Nonvested stock at December 29, 2012	465		$	47.48	216		$	54.73

__________________________________________

(1)Service-based restricted stock vested during each fiscal year.

(2)Performance-based awards and units included at 100% of target goal; under the terms of the awards, the recipient may earn between 0% and 200% of the award.

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Other Income (Expense) (Tables)

3 Months Ended

Dec. 29, 2012

Other Income and Expenses [Abstract]

Schedule of other nonoperating income (expense)

Other income (expense) is as follows (in thousands): 

	Three Months Ended
	December 29, 2012			December 31, 2011
Foreign exchange gain (loss)	$	(1,769	)	$	313
Gain (loss) on deferred compensation investments, net	294			(54		)
Other—net	—			59
Other income (expense), net	$	(1,475	)	$	318

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Earnings per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Dec. 29, 2012	Dec. 31, 2011
Earnings Per Share, Basic and Diluted [Abstract]
Weighted average shares outstanding—basic	23,770,000	23,462,000
Dilutive effect of employee awards	452,000	499,000
Weighted average shares outstanding—diluted	24,222,000	23,961,000
Net income	$ 14,153	$ 17,051
Net income per basic share	$ 0.60	$ 0.73
Net income per diluted share	$ 0.58	$ 0.71
Earnings Per Share, Diluted, Other Disclosures [Abstract]
Dilutive securities excluded from calculation of dilutive shares	73,146	207,517

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Stock Repurchases

3 Months Ended

Dec. 29, 2012

Stockholders' Equity Note [Abstract]

Stockholders' Equity

STOCK REPURCHASES AND DIVIDENDS

On October 4, 2012, the Board of Directors authorized a buyback program whereby we are authorized to repurchase up to $25.0 million of our common stock. The program was authorized for 12 months from the date of authorization. No shares have been purchased under this program as of December 29, 2012.

On December 10, 2012, we announced that the Board of Directors approved a $1.00 per share special cash dividend on our outstanding common stock payable on December 27, 2012 to stockholders of record on December 19, 2012, resulting in a payment of $24.0 million in the first quarter of fiscal 2013.

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Business Combinations (Tables)

3 Months Ended

Dec. 29, 2012

Lumera [Member]

Business Acquisition [Line Items]

Schedule of Purchase Price Allocation [Table Text Block]

Our preliminary allocation of the purchase price is as follows (in thousands):

Tangible assets	$	14,820
Goodwill	24,628
Intangible assets:
Existing technology	20,300
In-process R&D	1,800
Trade name	200
Customer lists	6,500
Backlog	1,000
Deferred tax liabilities	(8,994)
Liabilities assumed	(8,793)
Total	$	51,461

Innolight [Member]

Business Acquisition [Line Items]

Schedule of Purchase Price Allocation [Table Text Block]

Our preliminary allocation of the purchase price is as follows (in thousands):

Tangible assets	$	2,510
Goodwill	8,253
Intangible assets:
Existing technology	8,500
In-process R&D	430
Trade name	100
Customer lists	2,800
Deferred tax liabilities	(3,777		)
Liabilities assumed	(480		)
Total	$	18,336

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Stock-Based Compensation (Stock Options and Awards Activity) (Details) (USD $)	3 Months Ended
	Dec. 29, 2012		Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding, Number of Shares, beginning of period	641,000
Outstanding, Weighted Average Exercise Price Per Share, beginning of period	$ 27.86
Granted, Number of Shares	0
Granted, Weighted Average Exercise Price Per Share			$ 0
Exercised, Number of Shares	(68,000)
Exercised, Weighted Average Exercise Price Per Share			$ 26.96
Forfeitures, Number of Shares	0
Forfeitures, Weighted Average Exercise Price Per Share			$ 0.00
Expirations, Number of Shares	0
Expirations, Weighted Average Exercise Price Per Share			$ 0.00
Outstanding, Number of Shares, end of period	573,000
Outstanding, Weighted Average Exercise Price Per Share, end of period	$ 27.97
Outstanding, Weighted Average Remaining Contractual Term in Years	3 years 2 months 12 days
Outstanding, Aggregate Intrinsic Value	$ 12,168,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract]
Vested and expected to vest, Number of Shares	573,000
Vested and expected to vest, Weighted Average Exercise Price Per Share	$ 27.97
Vested and expected to vest, Weighted Average Remaining Contractual Term in Years	3 years 2 months 12 days
Vested and expected to vest, Aggregate Intrinsic Value	12,168,000
Exercisable, Number of Shares	556,000
Exercisable, Weighted Average Exercise Price Per Share	$ 27.47
Exercisable, Weighted Average Remaining Contractual Term in Years	3 years
Exercisable, Aggregate Intrinsic Value	12,083,000
Outstanding options, in-the-money	600,000
Aggregate intrinsic value of options exercised under stock option plans	$ 1,200,000		$ 1,600,000
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]
Nonvested stock, Number of Shares, beginning of period	440,000	[1]
Nonvested stock, Weighted Average Grant Date Fair Value, beginning of period	$ 47.81
Granted, Number of Shares	242,000	[1]
Granted, Weighted Average Grant Date Fair Value	$ 42.28
Vested, Number of Shares	(217,000)	[1]
Vested, Weighted Average Grant Date Fair Value	$ 42.35
Forfeited, Number of Shares	0	[1]
Forfeited, Weighted Average Grant Date Fair Value	$ 0.00
Nonvested stock, Number of Shares, end of period	465,000	[1]
Nonvested stock, Weighted Average Grant Date Fair Value, end of period	$ 47.48
Performance Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]
Nonvested stock, Number of Shares, beginning of period	152,000	[2]
Nonvested stock, Weighted Average Grant Date Fair Value, beginning of period	$ 57.55
Granted, Number of Shares	97,000	[2]
Granted, Weighted Average Grant Date Fair Value	$ 48.48
Vested, Number of Shares	(28,000)	[2]
Vested, Weighted Average Grant Date Fair Value	$ 49.50
Forfeited, Number of Shares	(5,000)	[2]
Forfeited, Weighted Average Grant Date Fair Value	$ 49.23
Nonvested stock, Number of Shares, end of period	216,000
Nonvested stock, Weighted Average Grant Date Fair Value, end of period	$ 54.73
Restricted Stock Units and Awards [Abstract]
Targeted goal of performance based awards and units	100.00%
Performance Restricted Stock Units [Member] | Minimum
Restricted Stock Units and Awards [Abstract]
Percentage of performance-based awards earned by recipient	0.00%
Performance Restricted Stock Units [Member] | Maximum [Member]
Restricted Stock Units and Awards [Abstract]
Percentage of performance-based awards earned by recipient	200.00%

[1] Service-based restricted stock vested during each fiscal year.

[2] Performance-based awards and units included at 100% of target goal; under the terms of the awards, the recipient may earn between 0% and 200% of the award.

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(Gain/Loss) (Details) (Derivatives not designated as hedging instruments, Foreign exchange contracts, Other income (expense), USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 29, 2012	Dec. 31, 2011
Derivatives not designated as hedging instruments | Foreign exchange contracts | Other income (expense)
Derivative Instruments, Gain (Loss) [Line Items]
Foreign exchange contracts	$ 1,900	$ 1,982

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Condensed Consolidated Balance Sheets (unaudited) Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 29, 2012	Sep. 29, 2012
Condensed Consolidated Balance Sheets (Parenthetical) [Abstract]
Allowance for Doubtful Accounts Receivable	$ 1,769	$ 1,443
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares Authorized	500,000,000	500,000,000
Common Stock, Shares, Outstanding	24,041,000	23,746,000

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Fair Values

3 Months Ended

Dec. 29, 2012

Fair Value Disclosures [Abstract]

Fair Values

FAIR VALUES

We measure our cash equivalents and marketable securities at fair value. The fair values of our financial assets and liabilities are determined using quoted market prices of identical assets or quoted market prices of similar assets from active markets. Level 1 valuations are obtained from real-time quotes for transactions in active exchange markets involving identical assets. Level 2 valuations are obtained from quoted market prices in active markets involving similar assets; these instruments, which mature within one year and are issued by counterparties with high credit ratings, include U.S. Treasury and international government obligations, investment-grade corporate bonds, certificates of deposit and commercial paper. Level 3 valuations would be based on unobservable inputs to a valuation model and include our own data about assumptions market participants would use in pricing the asset or liability based on the best information available under the circumstances. As of December 29, 2012 and September 29, 2012, we did not have any assets or liabilities valued based on Level 3 valuations.

Financial assets and liabilities measured at fair value as of December 29, 2012 are summarized below (in thousands):

	Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs		Total Fair Value
	(Level 1)		(Level 2)
Money market fund deposits (1)	$	20,932	$	—	$	20,932
Certificates of deposit (2)(7)	—		7,299		7,299
U.S. government obligations (3)(7)	—		86,647		86,647
Corporate notes and obligations (4)(7)	—		8,129		8,129
Commercial paper (1)(7)	—		1,999		1,999
Foreign currency contracts (5)(8)	—		1,092		1,092
Mutual funds — Deferred comp and supplemental plan (6)(9)	6,770		—		6,770

 ___________________________________________________

(1) Included in cash and cash equivalents on the Condensed Consolidated Balance Sheet. The carrying amounts approximate fair value due to the short-term maturities of the cash equivalents.

(2) Includes $5,278 recorded in cash and cash equivalents and $2,021 recorded in short-term investments on the Condensed Consolidated Balance Sheet.

(3) Includes $5,016 recorded in cash and cash equivalents and $81,631 recorded in short-term investments on the Condensed Consolidated Balance Sheet.

(4) Included in short-term investments on the Condensed Consolidated Balance Sheet.

(5) Includes $1,240 recorded in prepaid expenses and other assets and $148 recorded in other current liabilities on the Condensed Consolidated Balance Sheet (see Note 5).

(6) Includes $2,940 recorded in prepaid expenses and other assets and $3,830 recorded in other assets on the Condensed Consolidated Balance Sheet.

(7) Valuations are based upon quoted market prices in active markets involving similar assets. The market inputs used to value these instruments generally consist of market yields, reported trades, broker/dealer quotes or alternative pricing sources with reasonable levels of price transparency. Pricing sources include industry standard data providers, security master files from large financial institutions, and other third party sources which are input into a distribution-curve-based algorithm to determine a daily market value. This creates a “consensus price” or a weighted average price for each security.

(8) The principal market in which we execute our foreign currency contracts is the institutional market in an over-the-counter environment with a relatively high level of price transparency. The market participants usually are large commercial banks. Our foreign currency contracts’ valuation inputs are based on quoted prices and quoted pricing intervals from public data sources and do not involve management judgment.

(9) The fair value of mutual funds is determined based on quoted market prices. Securities traded on a national exchange are stated at the last reported sales price on the day of valuation; other securities traded in over-the-counter market and listed securities for which no sale was reported on that date are stated as the last quoted bid price.

Financial assets and liabilities measured at fair value as of September 29, 2012 are summarized below (in thousands):

	Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs			Total Fair Value
	(Level 1)		(Level 2)
Money market fund deposits(1)	$	10,340	$	—		$	10,340
Certificates of deposit(2)(7)	—		31,253			31,253
U.S. and international government obligations(3)(7)	—		110,967			110,967
Corporate notes and obligations(4)(7)	—		43,406			43,406
Commercial paper (3)(7)	—		2,000			2,000
Foreign currency contracts(5)(8)	—		(21		)	(21		)
Mutual funds—Deferred comp and supplemental plan(6)(9)	6,400		—			6,400

 ___________________________________________________

(1) Included in cash and cash equivalents on the Condensed Consolidated Balance Sheet. The carrying amounts approximate fair value due to the short-term maturities of the cash equivalents.

(2) Includes $29,234 recorded in cash and cash equivalents and $2,019 recorded in short-term investments on the Condensed Consolidated Balance Sheet.

(3) Included in short-term investments on the Condensed Consolidated Balance Sheet.

(4) Includes $1,223 recorded in cash and cash equivalents and $42,183 recorded in short-term investments on the Condensed Consolidated Balance Sheet.

(5) Includes $626 recorded in prepaid expenses and other assets and $645 recorded in other current liabilities on the Condensed Consolidated Balance Sheet.

(6) Includes $2,891 recorded in prepaid expenses and other assets and $3,509 recorded in other assets on the Condensed Consolidated Balance Sheet.

(7) Valuations are based upon quoted market prices in active markets involving similar assets. The market inputs used to value these instruments generally consist of market yields, reported trades, broker/dealer quotes or alternative pricing sources with reasonable levels of price transparency. Pricing sources include industry standard data providers, security master files from large financial institutions, and other third party sources which are input into a distribution-curve-based algorithm to determine a daily market value. This creates a “consensus price” or a weighted average price for each security.

(8) The principal market in which we execute our foreign currency contracts is the institutional market in an over-the-counter environment with a relatively high level of price transparency. The market participants usually are large commercial banks. Our foreign currency contracts’ valuation inputs are based on quoted prices and quoted pricing intervals from public data sources and do not involve management judgment.

(9) The fair value of mutual funds is determined based on quoted market prices. Securities traded on a national exchange are stated at the last reported sales price on the day of valuation; other securities traded in over-the-counter market and listed securities for which no sale was reported on that date are stated as the last quoted bid price.

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Fair Values (Tables)

3 Months Ended

Dec. 29, 2012

Fair Value Disclosures [Abstract]

Schedule of financial assets and liabilities measured at fair value

Financial assets and liabilities measured at fair value as of December 29, 2012 are summarized below (in thousands):

	Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs		Total Fair Value
	(Level 1)		(Level 2)
Money market fund deposits (1)	$	20,932	$	—	$	20,932
Certificates of deposit (2)(7)	—		7,299		7,299
U.S. government obligations (3)(7)	—		86,647		86,647
Corporate notes and obligations (4)(7)	—		8,129		8,129
Commercial paper (1)(7)	—		1,999		1,999
Foreign currency contracts (5)(8)	—		1,092		1,092
Mutual funds — Deferred comp and supplemental plan (6)(9)	6,770		—		6,770

 ___________________________________________________

(1) Included in cash and cash equivalents on the Condensed Consolidated Balance Sheet. The carrying amounts approximate fair value due to the short-term maturities of the cash equivalents.

(2) Includes $5,278 recorded in cash and cash equivalents and $2,021 recorded in short-term investments on the Condensed Consolidated Balance Sheet.

(3) Includes $5,016 recorded in cash and cash equivalents and $81,631 recorded in short-term investments on the Condensed Consolidated Balance Sheet.

(4) Included in short-term investments on the Condensed Consolidated Balance Sheet.

(5) Includes $1,240 recorded in prepaid expenses and other assets and $148 recorded in other current liabilities on the Condensed Consolidated Balance Sheet (see Note 5).

(6) Includes $2,940 recorded in prepaid expenses and other assets and $3,830 recorded in other assets on the Condensed Consolidated Balance Sheet.

(7) Valuations are based upon quoted market prices in active markets involving similar assets. The market inputs used to value these instruments generally consist of market yields, reported trades, broker/dealer quotes or alternative pricing sources with reasonable levels of price transparency. Pricing sources include industry standard data providers, security master files from large financial institutions, and other third party sources which are input into a distribution-curve-based algorithm to determine a daily market value. This creates a “consensus price” or a weighted average price for each security.

(8) The principal market in which we execute our foreign currency contracts is the institutional market in an over-the-counter environment with a relatively high level of price transparency. The market participants usually are large commercial banks. Our foreign currency contracts’ valuation inputs are based on quoted prices and quoted pricing intervals from public data sources and do not involve management judgment.

(9) The fair value of mutual funds is determined based on quoted market prices. Securities traded on a national exchange are stated at the last reported sales price on the day of valuation; other securities traded in over-the-counter market and listed securities for which no sale was reported on that date are stated as the last quoted bid price.

Financial assets and liabilities measured at fair value as of September 29, 2012 are summarized below (in thousands):

	Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs			Total Fair Value
	(Level 1)		(Level 2)
Money market fund deposits(1)	$	10,340	$	—		$	10,340
Certificates of deposit(2)(7)	—		31,253			31,253
U.S. and international government obligations(3)(7)	—		110,967			110,967
Corporate notes and obligations(4)(7)	—		43,406			43,406
Commercial paper (3)(7)	—		2,000			2,000
Foreign currency contracts(5)(8)	—		(21		)	(21		)
Mutual funds—Deferred comp and supplemental plan(6)(9)	6,400		—			6,400

 ___________________________________________________

(1) Included in cash and cash equivalents on the Condensed Consolidated Balance Sheet. The carrying amounts approximate fair value due to the short-term maturities of the cash equivalents.

(2) Includes $29,234 recorded in cash and cash equivalents and $2,019 recorded in short-term investments on the Condensed Consolidated Balance Sheet.

(3) Included in short-term investments on the Condensed Consolidated Balance Sheet.

(4) Includes $1,223 recorded in cash and cash equivalents and $42,183 recorded in short-term investments on the Condensed Consolidated Balance Sheet.

(5) Includes $626 recorded in prepaid expenses and other assets and $645 recorded in other current liabilities on the Condensed Consolidated Balance Sheet.

(6) Includes $2,891 recorded in prepaid expenses and other assets and $3,509 recorded in other assets on the Condensed Consolidated Balance Sheet.

(7) Valuations are based upon quoted market prices in active markets involving similar assets. The market inputs used to value these instruments generally consist of market yields, reported trades, broker/dealer quotes or alternative pricing sources with reasonable levels of price transparency. Pricing sources include industry standard data providers, security master files from large financial institutions, and other third party sources which are input into a distribution-curve-based algorithm to determine a daily market value. This creates a “consensus price” or a weighted average price for each security.

(8) The principal market in which we execute our foreign currency contracts is the institutional market in an over-the-counter environment with a relatively high level of price transparency. The market participants usually are large commercial banks. Our foreign currency contracts’ valuation inputs are based on quoted prices and quoted pricing intervals from public data sources and do not involve management judgment.

(9) The fair value of mutual funds is determined based on quoted market prices. Securities traded on a national exchange are stated at the last reported sales price on the day of valuation; other securities traded in over-the-counter market and listed securities for which no sale was reported on that date are stated as the last quoted bid price.

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Fiacal 2012 amd Fiscal 2011 Acquisitions (Details) (USD $)		3 Months Ended		3 Months Ended
	Jul. 23, 2012 Midaz Limited [Member]	Sep. 29, 2012 Hypertronics Pte Ltd [Member]	Jan. 05, 2011 Hypertronics Pte Ltd [Member]	Sep. 29, 2012 In-process R&D Hypertronics Pte Ltd [Member]	Mar. 31, 2012 In-process R&D Hypertronics Pte Ltd [Member] projects
Business Acquisition [Line Items]
Business acquisition, cash paid	$ 3,786,000		$ 14,499,000
Business Combination, Goodwill and Intangible Assets	4,609,000		11,847,000
Business Acquisition, Number of Projects Discontinued					1
Business Combination, Integration Related Costs				4,000,000	200,000
Inventory Write-down		$ 300,000

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Other Income (Expense)

3 Months Ended

Dec. 29, 2012

Other Income and Expenses [Abstract]

Other Income (Expense)

OTHER INCOME (EXPENSE)

Other income (expense) is as follows (in thousands): 

	Three Months Ended
	December 29, 2012			December 31, 2011
Foreign exchange gain (loss)	$	(1,769	)	$	313
Gain (loss) on deferred compensation investments, net	294			(54		)
Other—net	—			59
Other income (expense), net	$	(1,475	)	$	318