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

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.
Inventors:
; ; ; ; ; ; ;
Issue Date:
OSTI Identifier:
1477470
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA) LLNL
Patent Number(s):
10,059,624
Application Number:
15/238,230
Contract Number:
AC52-07NA27344
Resource Relation:
Patent File Date: 2016 Aug 16
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

Works referenced in this record:

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