9 April 2014 Bulk damage and stress behavior of fused silica irradiated by nanosecond laser
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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.
© 2014 Society of Photo-Optical Instrumentation Engineers (SPIE)
Liang Yang, Liang Yang, Xia Xiang, Xia Xiang, Xiaodong Yuan, Xiaodong Yuan, Wanguo Zheng, Wanguo Zheng, Shaobo He, Shaobo He, Haibin Lv, Haibin Lv, Zhonghua Yan, Zhonghua Yan, Haijun Wang, Haijun Wang, Wei Liao, Wei Liao, Xinxiang Miao, Xinxiang Miao, Xiaotao Zu, Xiaotao Zu, } "Bulk damage and stress behavior of fused silica irradiated by nanosecond laser," Optical Engineering 53(4), 047103 (9 April 2014). https://doi.org/10.1117/1.OE.53.4.047103 . Submission:

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