Characteristics of 355 nm Laser Damage in Bulk Materials
YU Zhen-Kun1,2, HE Hong-Bo1**, QI Hong-Ji1, FANG Zhou1,2, LI Da-Wei1
1Key Laboratory of Materials for High Power Lasers, Shanghai Institute of Optics and Fine Mechanics, Shanghai 201800 2University of Chinese Academy of Sciences, Beijing 100049
Abstract：The laser damage resistances of four crystals (CaF2, MgF2, Al2O3, and SiO2) and fused silica (JGS1) irradiated at 355 nm (8 ns, 300-on-1) are reported. The laser-induced damage threshold is measured using a tripled Nd:YAG laser system. The results obtained from the pure crystals are in accordance with their specific optical, mechanical, and thermal properties. An empirical law based on the Franz–Keldysh effect can interpret the experimental results.
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2013, Vol. 30 
