Anti-laser Irradiation Ability of VO₂ Films Against Pulsed Power Laser

• Main Authors: TIAN Ye, LUO Fei, LIU Dabo, QI Hongfei, CHEN Dongsheng, LUO Bingwei, ZHOU Haitao, Mikhail RYZHKOV
• Format: Article
• Language: zho
• Published: Journal of Aeronautical Materials 2017-06-01
• Series: Journal of Aeronautical Materials
• Subjects: VO₂; thermochromism; laser protection
• Online Access: http://jam.biam.ac.cn/CN/Y2017/V37/I3/56
• ISSN: 1005-5053; 1005-5053

Thermochromic VO₂ film was fabricated on quartz substrate through sputtering oxidation coupling method, and its optical properties were also investigated. Results show that the prepared VO₂ film exhibits good thermo-optical switching performance under weak light irradiation, while large transmittance changes both in the visible and near-infrared light area. Under the condition of pulsed power laser irratiating, large optical modulation depth is also derived in the infra-red region. With the increase of pulsed laser energy, the scattering coefficient is gradually decreased, and the anti-laser irradiation ability is firstly appeared to have a decline trend after an initial ascent. The minimum transmittance value can reach to 7% and the laser damage threshold is about 50 mJ/cm².