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Proceedings Paper

Effect of laser beam size on laser-induced damage performance
Author(s): Wei Han; Fang Wang; Lidan Zhou; Fuquan Li; Bin Feng; Huaiting Jia; Yong Xiang; Feng Jing; Wanguo Zheng
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Paper 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.

Paper Details

Date Published: 22 November 2011
PDF: 7 pages
Proc. SPIE 8190, Laser-Induced Damage in Optical Materials: 2011, 819012 (22 November 2011); doi: 10.1117/12.898907
Show Author Affiliations
Wei Han, Research Ctr. of Laser Fusion (China)
Fang Wang, Research Ctr. of Laser Fusion (China)
Lidan Zhou, Research Ctr. of Laser Fusion (China)
Fuquan Li, Research Ctr. of Laser Fusion (China)
Bin Feng, Research Ctr. of Laser Fusion (China)
Huaiting Jia, Research Ctr. of Laser Fusion (China)
Yong Xiang, Research Ctr. of Laser Fusion (China)
Feng Jing, Research Ctr. of Laser Fusion (China)
Wanguo Zheng, Research Ctr. of Laser Fusion (China)


Published in SPIE Proceedings Vol. 8190:
Laser-Induced Damage in Optical Materials: 2011
Gregory J. Exarhos; Vitaly E. Gruzdev; Joseph A. Menapace; Detlev Ristau; M. J. Soileau, Editor(s)

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