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Optical Engineering

Bulk damage and stress behavior of fused silica irradiated by nanosecond laser
Author(s): Liang Yang; Xia Xiang; Xiaodong Yuan; Wanguo Zheng; Shaobo He; Haibin Lv; Zhonghua Yan; Haijun Wang; Wei Liao; Xinxiang Miao; Xiaotao Zu
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Paper Abstract

The laser-induced bulk damage and stress behaviors of fused silica are studied by using a neodymium-doped yttrium aluminum garnet laser operated at 1064 nm with pulse width of 11.7 ns. Three zones of bulk damage are defined: columned cavity zone, compacted zone, and crack zone. The damage morphology and stress distribution are characterized by a three-dimensional digital microscope and a polarizer stress analyzer. The results show that the stress in the columned cavity zone and compacted zone is approximately zero. From the laser beam center to fringe, both tensile and compressive stresses in the crack zone increase abruptly and linearly and then decrease exponentially. Thermal annealing is used to prove the phase retardation caused by the residual stress. The formation mechanism of bulk damage is also discussed.

Paper Details

Date Published: 9 April 2014
PDF: 7 pages
Opt. Eng. 53(4) 047103 doi: 10.1117/1.OE.53.4.047103
Published in: Optical Engineering Volume 53, Issue 4
Show Author Affiliations
Liang Yang, Univ. of Science and Technology of China (China)
Research Center of Laser Fusion (China)
Xia Xiang, Univ. of Electronic Science and Technology of China (China)
Xiaodong Yuan, China Academy of Engineering Physics (China)
Wanguo Zheng, China Academy of Engineering Physics (China)
Shaobo He, China Academy of Engineering Physics (China)
Haibin Lv, China Academy of Engineering Physics (China)
Zhonghua Yan, Univ. of Science and Technology of China (China)
Haijun Wang, China Academy of Engineering Physics (China)
Wei Liao, China Academy of Engineering Physics (China)
Xinxiang Miao, China Academy of Engineering Physics (China)
Xiaotao Zu, Univ. of Electronic Science and Technology of China (China)


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