John Ambroseo '83 (chemistry) is President and Chief Executive Officer, as well as a member of the Board of Directors, of Coherent, a Silicon Valley-based international corporation, since October 2002. He joined Coherent in 1988 and quickly moved up the ladder. From August 1988 until March 1997, he served as Sales Engineer, Product Marketing Manager, National Sales Manager, and Director of European Operations. John has also been Chief Operating Officer, Executive Vice President, President and General Manager of the Coherent Photonics Group and the Manager of Coherent's Scientific Business Unit.
After graduating from Purchase, John received his PhD in Chemistry from the University of Pennsylvania. He is the past President of LEOMA (Laser Electro-Optics Manufacturers Association), is a former trustee of the Purchase College Foundation, and is a current member of the Board of Visitors
of The School of Science and Technology at Temple University.