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Minimizing radiation damage in nonlinear optical crystals

United States Patent

5,805,329
September 8, 1998
View the Complete Patent at the US Patent & Trademark Office
Los Alamos National Laboratory - Visit the Technology Transfer Division Website
Methods are disclosed for minimizing laser induced damage to nonlinear crystals, such as KTP crystals, involving various means for electrically grounding the crystals in order to diffuse electrical discharges within the crystals caused by the incident laser beam. In certain embodiments, electrically conductive material is deposited onto or into surfaces of the nonlinear crystals and the electrically conductive surfaces are connected to an electrical ground. To minimize electrical discharges on crystal surfaces that are not covered by the grounded electrically conductive material, a vacuum may be created around the nonlinear crystal.
Cooke; D. Wayne (Santa Fe, NM), Bennett; Bryan L. (Los Alamos, NM), Cockroft; Nigel J. (Santa Fe, NM)
The Regents of the University of California (Los Alamos, NM)
08/ 630,305
April 10, 1996
The invention was made with Government support under Contract No. W-7405-ENG- 36 awarded by the U.S. Department of Energy. The Government has certain rights in the invention.