Polygon-binaryzation modeling of laser damage morphologies on dielectric coating to describe their wavefront properties

Yi Zheng; Zhichao Liu; Ping Ma; Feng Pan

doi:10.1117/12.2073665

22 September 2014 Polygon-binaryzation modeling of laser damage morphologies on dielectric coating to describe their wavefront properties

Yi Zheng, Zhichao Liu, Ping Ma, Feng Pan

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Proceedings Volume 9238, Pacific Rim Laser Damage 2014: Optical Materials for High-Power Lasers; 92380B (2014) https://doi.org/10.1117/12.2073665
Event: Pacific-rim Laser Damage, 2014, Yokohama, Japan

Abstract

Laser-induced damages on optical components will cause wavefront modulation effect and further influence the downstream propagation of transmitted beam. In this paper, a method named polygon-binaryzation modeling (PBM) is applied to describe this effect taking place on dielectric coating. Both theoretical and experimental studies are carried out. In theory, the principle of PBM is introduced. Downstream beam propagation behind damage site could be simulated based on the wavefront model. In experiment, a pump-and-probe testing bench is designed. Wavefront properties of coating damages with opaque and transparent morphologies are detected. Furthermore, based on the experimental parameters, PBM is simulated. The good match between simulation and experiment demonstrates the validity of our method.

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Yi Zheng, Zhichao Liu, Ping Ma, and Feng Pan "Polygon-binaryzation modeling of laser damage morphologies on dielectric coating to describe their wavefront properties", Proc. SPIE 9238, Pacific Rim Laser Damage 2014: Optical Materials for High-Power Lasers, 92380B (22 September 2014); https://doi.org/10.1117/12.2073665

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KEYWORDS

Wavefronts

Coating

Opacity

Wave propagation

Laser induced damage

Modulation

Phase shifts

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