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Title: System and method for laser-based, non-evaporative repair of damage sites in the surfaces of fused silica optics

A method for repairing a damage site on a surface of an optical material is disclosed. The method may involve focusing an Infrared (IR) laser beam having a predetermined wavelength, with a predetermined beam power, to a predetermined full width ("F/W") 1/e.sup.2 diameter spot on the damage site. The focused IR laser beam is maintained on the damage site for a predetermined exposure period corresponding to a predetermined acceptable level of downstream intensification. The focused IR laser beam heats the damage site to a predetermined peak temperature, which melts and reflows material at the damage site of the optical material to create a mitigated site.
Inventors:
; ; ; ; ; ; ;
Issue Date:
OSTI Identifier:
1322102
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA) LLNL
Patent Number(s):
9,434,645
Application Number:
13/707,053
Contract Number:
AC52-07NA27344
Resource Relation:
Patent File Date: 2012 Dec 06
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Other works cited in this record:

Optimization of a laser mitigation process in damaged fused silica
journal, March 2009

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