IPG Photonics Corporation to Announce First-Quarter 2007 Financial Results on May 8, 2007

IPG Photonics Corporation to Announce First-Quarter 2007 Financial Results on May 8, 2007

Company to Webcast Conference Call Live Over the Internet

IPG Photonics (NASDAQ: IPGP) today announced that in conjunction with its scheduled quarterly financial results news release, the Company plans to webcast its first-quarter 2007 financial results conference call on Tuesday, May 8, 2007 at 10:00 a.m. ET.

IPG’s first-quarter 2007 conference call will be hosted by IPG Photonics Chairman and Chief Executive Officer Dr. Valentin P. Gapontsev, and Vice President and Chief Financial Officer Timothy P.V. Mammen. To participate, please dial (913) 981-5534 or (800) 289-0546 five minutes prior to the start of the call. To listen to the live webcast, visit the Company’s website at www.ipgphotonics.com prior to the event’s broadcast. Interested parties unable to listen to the live call may access an archived version of the webcast on IPG’s website.

About IPG Photonics Corporation

IPG Photonics is a leading global manufacturer of high-performance fiber lasers and amplifiers for diverse applications in numerous markets, such as materials processing, communications, medical, and scientific and research. Founded in 1990, IPG Photonics pioneered the development and commercialization of optical fiber-based lasers, a new generation of lasers that combine the advantages of semiconductor diodes with the high amplification and precise beam qualities of specialty optical fibers. Fiber lasers deliver superior performance, reliability and usability at a lower total cost of ownership compared with conventional lasers, allowing end-users to increase productivity and lower operating costs. Headquartered in Oxford, Massachusetts, IPG has additional plants in Germany, Russia and Italy, and regional sales offices in Michigan, Japan, South Korea, China, India and the United Kingdom. For more information on IPG Photonics, please visit www.ipgphotonics.com.

IPGP-G

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Contacts

Sharon Merrill Associates, Inc.
David Calusdian, 617-542-5300
Executive Vice President