Simulation study on the influence of subsurface deficiency on fused silica laser damage threshold

Lizi Chen; Zhen Xiang; Chunyuan Jing

doi:10.1117/12.2020245

9 July 2013 Simulation study on the influence of subsurface deficiency on fused silica laser damage threshold

Lizi Chen, Zhen Xiang, Chunyuan Jing

Proceedings Volume 8786, Pacific Rim Laser Damage 2013: Optical Materials for High Power Lasers; 87861Z (2013) https://doi.org/10.1117/12.2020245
Event: SPIE/SIOM Pacific Rim Laser Damage: Optical Materials for High-Power Lasers, 2013, Shanghai, China

Abstract

Based on the finite element analysis method, establishment of a three dimensional fused silica lens model under the laser irradiation, and simulated the ideal fused silica surface temperature field and thermal stress field distribution situation, then the influences of subsurface deficiency on fused silica‘s laser damage threshold (LDT) were analyzed, which include scratch and impurity. It is found that the deficiencies in subsurface may affect the distribution of temperature field and thermal stress field of the fused silica surface, which makes the injected laser beams energy centralize on a small area around the deficiencies, thus leading to stress cracking of fused silica and LDT reduction.

Citation Download Citation

Lizi Chen, Zhen Xiang, and Chunyuan Jing "Simulation study on the influence of subsurface deficiency on fused silica laser damage threshold", Proc. SPIE 8786, Pacific Rim Laser Damage 2013: Optical Materials for High Power Lasers, 87861Z (9 July 2013); https://doi.org/10.1117/12.2020245

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