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Effect of laser beam size on laser-induced damage performance

  • Wei Han*
  • , Fang Wang
  • , Lidan Zhou
  • , Fuquan Li
  • , Bin Feng
  • , Huaiting Jia
  • , Yong Xiang
  • , Feng Jing
  • , Wanguo Zheng
  • *Corresponding author for this work
  • China Academy of Engineering Physics

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The influence of laser beam size on laser-induced damage performance, especially damage probability and laser-induced damage threshold (LIDT) is investigated. It is found that damage probability is beam size dependent when various damage precursors with different potential behaviors are involved. This causes damage probability and LIDT are different between tested under large-aperture beam and under small-aperture beam. Moreover, fluence fluctuations of large-aperture laser beam bring about hot spots moving randomly across the beam from shot to shot. Thus it leads to the most probable maximum fluence after many shots at any location across components is several times the average beam fluence. These two effects result in difference of damage performance of components in large-aperture lasers and in small-aperture lasers.

Original languageEnglish
Title of host publication43rd Annual Laser Damage Symposium Proceedings - Laser-Induced Damage in Optical Materials
Subtitle of host publication2011
DOIs
StatePublished - 2011
Externally publishedYes
Event43rd Annual Laser Damage Symposium - Laser-Induced Damage in Optical Materials: 2011 - Boulder, CO, United States
Duration: 18 Sep 201021 Sep 2010

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8190
ISSN (Print)0277-786X

Conference

Conference43rd Annual Laser Damage Symposium - Laser-Induced Damage in Optical Materials: 2011
Country/TerritoryUnited States
CityBoulder, CO
Period18/09/1021/09/10

Keywords

  • Beam aperture
  • Beam modulation
  • Laser-induced damage

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