The IEEE Photonics Society William Streifer Scientific Achievement Award is given to recognize an exceptional single scientific contribution which has had a significant impact in the field of lasers and electro-optics in the past 10 years. It may be given to an individual or to a group for a single contribution of significant work in the field. No candidate shall have previously received a major IEEE award for the same work. Candidates need not be members of the IEEE or the Photonics Society. The Award is endowed by Xerox Corp and Spectra Diode Labs. The Award consists of an honorarium of $2,500 and a medal. The presentation is made at the IEEE Photonics Conference.