Laser damage threshold measurements of 1 064 nm high-reflection mirrors

Gang, 周刚 Zhou; Bin, 马彬 Ma; Hongfei, 焦宏飞 Jiao; Tao, 丁涛 Ding; Jinlong, 张锦龙 Zhang; Zhengxiang, 沈正祥 Shen; Xinbin, 程鑫彬 Cheng; Zhanshan, 王占山 Wang

doi:10.3788/hplpb20112304.0963

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Optical Film Damage Threshold Test1

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2023

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“…The main methods for measuring the laser damage threshold of thin film are 1-on-1 test method [17] , S-on-1 test method, R-on-1 and N-on-1 test method [18] , etc.…”

Section: Optical Film Damage Threshold Testmentioning

confidence: 99%

Laser damage threshold of vanadium dioxide film

Lü

Zhou²,

Wang³

et al. 2023

Fourth International Conference on Optoelectronic Science and Materials (ICOSM 2022)

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Vanadium dioxide film can be used to anti-laser interference infrared detector. If the laser energy is strong enough, the film may also be damaged under laser irradiation. VO2 thin films were prepared on sapphire substrates by molecular beam epitaxy. The laser damage threshold test of VO2 film was designed. VO2 film was irradiated with 1064 nm laser, and the damage characteristics of the film were observed by metallographic microscope. The damage threshold of the film was determined according to the damage morphology. The experimental equipment of laser pretreatment to enhance the film damage threshold was set up, and the laser energy of 20%-90% of the film damage threshold was used to pretreat the film. It is found that there is an optimal pretreatment energy for raising the damage threshold of vanadium dioxide films by laser pretreatment, and the optimal pretreatment energy is 60% of the damage threshold energy. The damage threshold of vanadium dioxide films pretreated with this energy was increased by about 31%.

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“…The main methods for measuring the laser damage threshold of thin film are 1-on-1 test method [17] , S-on-1 test method, R-on-1 and N-on-1 test method [18] , etc.…”

Section: Optical Film Damage Threshold Testmentioning

confidence: 99%