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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

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:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1322102
Patent Number(s):
9,434,645
Application Number:
13/707,053
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA)
DOE Contract Number:  
AC52-07NA27344
Resource Type:
Patent
Resource Relation:
Patent File Date: 2012 Dec 06
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., 2016. 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/1322102.
@article{osti_1322102,
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 = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2016},
month = {9}
}

Patent:

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Works referenced in this record:

Carbon dioxide laser polishing of fused silica surfaces for increased laser-damage resistance at 1064 nm
journal, January 1982

  • Temple, Paul A.; Lowdermilk, W. Howard; Milam, David
  • Applied Optics, Vol. 21, Issue 18, p. 3249-3255
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Methods for mitigating surface damage growth in NIF final optics
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  • Boulder Damage
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Mitigation of laser damage growth in fused silica NIF optics with a galvanometer scanned CO 2 laser
conference, May 2006

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  • High-Power Laser Ablation 2006, SPIE Proceedings
  • DOI: 10.1117/12.669393

Mitigation of growth of laser initiated surface damage in fused silica using a 4.6-micron wavelength laser
conference, October 2006

  • Guss, Gabe; Bass, Isaac; Draggoo, Vaughn
  • Boulder Damage Symposium XXXVIII: Annual Symposium on Optical Materials for High Power Lasers
  • DOI: 10.1117/12.696084

Downstream intensification effects associated with CO 2 laser mitigation of fused silica
conference, October 2007

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  • Boulder Damage Symposium XXXIX: Annual Symposium on Optical Materials for High Power Lasers, SPIE Proceedings
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Optimization of a laser mitigation process in damaged fused silica
journal, March 2009


Results of applying a non-evaporative mitigation technique to laser-initiated surface damage on fused-silica
conference, November 2010

  • Adams, J. J.; Bolourchi, M.; Bude, J. D.
  • Laser Damage Symposium XLII: Annual Symposium on Optical Materials for High Power Lasers
  • DOI: 10.1117/12.867652

Mitigation of laser damage growth in fused silica with a galvanometer scanned CO2 laser
conference, December 2005

  • Bass, Isaac L.; Guss, Gabriel M.; Hackel, Richard P.
  • Boulder Damage Symposium XXXVII: Annual Symposium on Optical Materials for High Power Lasers
  • DOI: 10.1117/12.638828