外文题目: Improving 355nm laser damage resistance for fluoride mirrors with overcoat layer
作者: Yu, Zhen; Qi, Hongji; Zhang, Weili; Wang, Hu; Wang, Bin
刊名: Proc.SPIE
来源图书: PACIFIC RIM LASER DAMAGE 2017-OPTICAL MATERIALS FOR HIGH-POWER LASERS
年: 2017 卷: 10339
会议名称: Pacific Rim Laser Damage Symposium on Optical Materials for High Power Lasers (PLD)
英文关键词:
Overcoat layer; residual stress; damage morphology; fluoride multilayer
COATINGS; MORPHOLOGY; NM
英文摘要:
The damage resistance of 355nm laser can be improved for fluoride mirrors with an SiO2 overcoat layer. Three kinds of samples are deposited with the overcoat layer of different thicknesses. Calculated with Stoney equation, the residual stress of the film can be altered to the compressive stress with the increase of the overcoat layer. Through the investigation of the damage pits, we find the damages are the thermal-mechanical coupled and induced by the nodules buried in the fluoride multilayers. The surface morphologies around the damage pits are analyzed from the two respects: Cracks and surface ablation. The two characters of the damage morphologies can be suppressed with the addition of the SiO2 overcoat layer.


文献类型: 会议论文
正文语种: English
收录类别: ISTP
DOI: 10.1117/12.2269713


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