1 February 2008 Influence of beam spatial distribution on the laser damage of optical material
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Abstract
Based on the theoretical model of uniform pulsed laser beam irradiating on the optical material, the stress distribution of the transparent material when laser with different beam spatial distribution - circle beam spot and dark-cross beam spot - irradiated to the inner of optical material was discussed. The experiment that 532nm Q-switched laser pulse was focused to the inner of silicate glass was taken, which the beam spatial distribution of the output laser was dark-cross beam spot. According to the theory, the experimental results and phenomena were analyzed and the damage micro-configurations were explained. The theory and experiment could be accordant well.
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Lijun Qi, Lijun Qi, Xiao Zhu, Xiao Zhu, Changhong Zhu, Changhong Zhu, Guangzhi Zhu, Guangzhi Zhu, Tao Yang, Tao Yang, } "Influence of beam spatial distribution on the laser damage of optical material", Proc. SPIE 6825, Lasers in Material Processing and Manufacturing III, 68250A (1 February 2008); doi: 10.1117/12.761466; https://doi.org/10.1117/12.761466
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