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News Release
November 20, 2006

Zygo Corporation Announces Appointment of John Stack, President, Optical Systems Solutions Business Unit

MIDDLEFIELD, CT, Nov 20, 2006 (MARKET WIRE via COMTEX News Network) -- Zygo Corporation (NASDAQ: ZIGO) today announced the appointment of John Stack to the position of President, Optical Systems Solutions Business Unit. Mr. Stack will report directly to Bruce Robinson, ZYGO's president and chief executive officer, and will be a member of ZYGO's executive staff.

Most recently, Mr. Stack was president and chief operating officer with Edmund Optics, Inc., a leading precision optics and imaging company based in New Jersey. In this capacity, Mr. Stack had full worldwide operational responsibility for sales, manufacturing, and engineering. He holds a bachelor of science degree in physics from the University of Pittsburgh, and is a graduate of the Wharton Executive Development Program, Wharton School of Business.

Mr. Robinson stated, "John has had a successful career with Edmund Optics, has extensive worldwide experience, and has participated in the significant growth of Edmund over a number of years. I am confident that John's strategic expertise and organization development skills will contribute to the continued growth in the optics division."

Zygo Corporation, headquartered in Middlefield, Connecticut, is a worldwide supplier of optical metrology instruments, precision optics, and electro-optics design and manufacturing services, servicing customers in the semiconductor capital equipment and industrial markets. See ZYGO's web site at www.zygo.com for additional information.

All statements other than statements of historical fact included in this news release regarding our financial position, business strategy, plans, anticipated growth rates, and objectives of management of the Company for future operations are forward-looking statements. Forward-looking statements are intended to provide management's current expectations or plans for the future operating and financial performance of the Company based upon information currently available and assumptions currently believed to be valid. Forward-looking statements can be identified by the use of words such as "anticipate," "believe," "estimate," "expect," "intend," "plans," "strategy," "project," and other words of similar meaning in connection with a discussion of future operating or financial performance. Actual results could differ materially from those contemplated by the forward-looking statements as a result of certain factors. Among the important factors that could cause actual events to differ materially from those in the forward-looking statements are fluctuations in capital spending of our customers, fluctuations in net sales to our major customer, manufacturing and supplier risks, dependence on and timing of new product development, rapid technological and market change, risks in international operations, dependence on proprietary technology and key personnel, length of the sales cycle, environmental regulations, and fluctuations in our stock price. Further information on potential factors that could affect Zygo Corporation's business is described in our reports on file with the Securities and Exchange Commission, including our Form 10-K for the fiscal year ended June 30, 2006.

For Further Information Call:
Walter A. Shephard
Vice President Finance, CFO, and Treasurer
Voice:  860-704-3955
Contact via http://www.marketwire.com/mw/emailprcntct?id=B3F9F129D13422D7

SOURCE: Zygo Corporation



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