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

Abstract

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:
; ; ; ; ; ; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1477470
Patent Number(s):
10,059,624
Application Number:
15/238,230
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA) LLNL
DOE Contract Number:  
AC52-07NA27344
Resource Type:
Patent
Resource Relation:
Patent File Date: 2016 Aug 16
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Adams, John J., Bolourchi, Masoud, Bude, Jeffrey D., Guss, Gabriel M., Jarboe, Jeffery A., Matthews, Manyalibo J., Nostrand, Michael C., and Wegner, Paul J. System and method for laser-based, non-evaporative repair of damage sites in the surfaces of fused silica optics. United States: N. p., 2018. Web.
Adams, John J., Bolourchi, Masoud, Bude, Jeffrey D., Guss, Gabriel M., Jarboe, Jeffery A., Matthews, Manyalibo J., Nostrand, Michael C., & Wegner, Paul J. System and method for laser-based, non-evaporative repair of damage sites in the surfaces of fused silica optics. United States.
Adams, John J., Bolourchi, Masoud, Bude, Jeffrey D., Guss, Gabriel M., Jarboe, Jeffery A., Matthews, Manyalibo J., Nostrand, Michael C., and Wegner, Paul J. Tue . "System and method for laser-based, non-evaporative repair of damage sites in the surfaces of fused silica optics". United States. https://www.osti.gov/servlets/purl/1477470.
@article{osti_1477470,
title = {System and method for laser-based, non-evaporative repair of damage sites in the surfaces of fused silica optics},
author = {Adams, John J. and Bolourchi, Masoud and Bude, Jeffrey D. and Guss, Gabriel M. and Jarboe, Jeffery A. and Matthews, Manyalibo J. and Nostrand, Michael C. and Wegner, Paul J.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {8}
}

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Works referenced in this record:

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