Coherent, Inc.

Arnold L Bloom

Dennis G Fischer

Thomas F Johnston, Jr

Bruce E Perilloux

Larry Giammona

A laser 10 is disclosed in which there are incorporated one or more diffractive optical elements (DOE's) 20. The DOE's can be used in place of conventional optics to save costs and allow design of resonators not heretofore possible. The ability to vary the reflectivity of the surface of a DOE in any desired pattern allows unprecedented control of both the intracavity mode as well as the mode of the output beam.

Laser resonators employing diffractive optical elements

A broad band phase shifting system, having a fixed angle of phase retardation, has at least one broad band reflecting means in the system. The broad band reflecting means also has an angle of phase retardation, with the angle of phase retardation of the reflecting means less than the fixed angle of phase retardation of the system.

Growing community of inventors

Menlo Park, CA, United States of America

Arnold L Bloom