Vanadium dioxide metasurfaces structures with infrared radiation protection properties

Yiqing Wang; Qilu He; Qibin Liu; Qingzhong Huang; Ying Huang

doi:10.1117/12.2625256

20 January 2022 Vanadium dioxide metasurfaces structures with infrared radiation protection properties

Yiqing Wang, Qilu He, Qibin Liu, Qingzhong Huang, Ying Huang

Proceedings Volume 12154, 13th International Photonics and OptoElectronics Meetings (POEM 2021); 121540M (2022) https://doi.org/10.1117/12.2625256
Event: 13th International Photonics and OptoElectronics Meetings (POEM 2021), 2021, Wuhan, China

Abstract

This paper presents a laser protection idea to form a two-dimensional subwavelength metasurfaces structure with phasechange vanadium dioxide (VO₂) material. By using the phase change characteristics of VO₂, the signal light can be focused to the infrared focal plane at room temperature, and VO₂ undergoes a phase change under the action of a strong laser, which causes the spot on the focal plane to diverge, reducing the light intensity and energy density to protect the focal plane. The final imaging spot diameter of the metasurfaces designed in this paper is 4.4μm, which can intercept 76% of the incident energy from the outside after the phase change.

Citation Download Citation

Yiqing Wang, Qilu He, Qibin Liu, Qingzhong Huang, and Ying Huang "Vanadium dioxide metasurfaces structures with infrared radiation protection properties", Proc. SPIE 12154, 13th International Photonics and OptoElectronics Meetings (POEM 2021), 121540M (20 January 2022); https://doi.org/10.1117/12.2625256

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