吸收基上高反射介质涂层的激光致损伤阈值

2018 International Conference Laser Optics (ICLO) Pub Date : 2018-06-01 DOI:10.1109/lo.2018.8435406

R. Akhmadullin, S. Gagarskiy, A. N. Sergeev

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引用次数: 0

摘要

本文研究了SiC吸波基底上HfO2 / SiO2 / Ta2O5 / SiO2涂层的激光诱导损伤(LID)。实验表明，样品相对于激光束的振动或微位移的存在会导致LID阈值的显著降低。对碳化硅衬底的热致应力进行了数值模拟，结果表明，试样位移存在时，热致应力增大。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Laser induced damage threshold of high reflective dielectric coatings on absorbing substrate

in this work the laser induced damage (LID) of HfO2 / SiO2 и Ta2O5 / SiO2 coatings on SiC absorbing substrate is investigated. It is shown experimentally, that presence of vibration or microdisplacement of sample relatively to laser beam may lead to significant reduction of LID threshold. Numerical simulation of thermally induced stresses in silicon carbide substrate shows increase of thermally-induced stress in the presence of sample displacement.

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2018 International Conference Laser Optics (ICLO)

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