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Gain media edge treatment to suppress amplified spontaneous emission in a high power laser

United States Patent

December 9, 2008
View the Complete Patent at the US Patent & Trademark Office
Lawrence Livermore National Laboratory - Visit the Industrial Partnerships Office Website
A novel method and apparatus for suppressing ASE and parasitic oscillation modes in a high average power laser is introduced. By roughening one or more peripheral edges of a solid-state crystal or ceramic laser gain media and by bonding such edges using a substantially high index bonding elastomer or epoxy to a predetermined electromagnetic absorbing arranged adjacent to the entire outer surface of the peripheral edges of the roughened laser gain media, ASE and parasitic oscillation modes can be effectively suppressed.
Hackel; Lloyd A. (Livermore, CA), Soules; Thomas F. (Livermore, CA), Fochs; Scott N. (Livermore, CA), Rotter; Mark D. (San Ramon, CA), Letts; Stephan A. (San Ramon, CA)
Lawrence Livermore National Laboratory, LLC (Livermore, CA)
10/ 984,565
November 8, 2004
The United States Government has rights in this invention pursuant to Contract No. W-7405-ENG-48 between the United States Department of Energy and the University of California for the operation of Lawrence Livermore National Laboratory.