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SYSTEM AND METHOD FOR LASER-BASED, NON-EVAPORATIVE REPAIR OF DAMAGE SITES IN THE SURFACES OF FUSED SILICA OPTICS

United States Patent Application

20160368819
A1
View the Complete Application at the US Patent & Trademark Office
Lawrence Livermore National Laboratory - Visit the Industrial Partnerships Office Website
The present disclosure relates to a system for repairing a damage site on a surface of an optical material. The system may have an Infrared (IR) laser which generates a laser beam having a predetermined wavelength, with a predetermined beam power, and such that the laser beam is focused to a predetermined full width ("F/W") 1/e.sup.2 diameter spot on the damage site. The IR laser may be controlled to maintain the focused IR laser beam on the damage site for a predetermined exposure period corresponding to a predetermined acceptable level of downstream intensification. The laser beam may heat the damage site to a predetermined peak temperature which causes melting and reflowing of material at the damage site to create a mitigated site.
ADAMS, John J. (Livermore, CA), BOLOURCHI, Masoud (Livermore, CA), BUDE, Jeffrey D. (Danville, CA), GUSS, Gabriel M. (Manteca, CA), JARBOE, Jeffery A. (Livermore, CA), MATTHEWS, Manyalibo J. (Livermore, CA), NOSTRAND, Michael C. (Livermore, CA), WEGNER, Paul J. (Livermore, CA)
15/ 238,230
August 16, 2016
STATEMENT OF GOVERNMENT RIGHTS [0002] The United States Government has rights in this invention pursuant to Contract No. DE-AC52-07NA27344 between the U.S. Department of Energy and Lawrence Livermore National Security, LLC, for the operation of Lawrence Livermore National Laboratory.