Laser damage threshold of vanadium dioxide film

Yuan Lu; Changqi Zhou; Xi Wang; Leilei Chen; Wei Jin

doi:10.1117/12.2667437

6 March 2023 Laser damage threshold of vanadium dioxide film

Yuan Lu, Changqi Zhou, Xi Wang, Leilei Chen, Wei Jin

Proceedings Volume 12553, Fourth International Conference on Optoelectronic Science and Materials (ICOSM 2022); 125530S (2023) https://doi.org/10.1117/12.2667437
Event: 2022 4th International Conference on Optoelectronic Science and Materials (ICOSM2022), 2022, Henfei, China

Abstract

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%.

Citation Download Citation

Yuan Lu, Changqi Zhou, Xi Wang, Leilei Chen, and Wei Jin "Laser damage threshold of vanadium dioxide film", Proc. SPIE 12553, Fourth International Conference on Optoelectronic Science and Materials (ICOSM 2022), 125530S (6 March 2023); https://doi.org/10.1117/12.2667437

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