| 脉冲激光辐射下VO_2薄膜的光限幅性能 |
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| 引用本文： | 田野,罗飞,刘大博,祁洪飞,陈冬生,罗炳威,周海涛,麦克瓦尔&#;里兹柯夫.脉冲激光辐射下VO_2薄膜的光限幅性能[J].航空材料学报,2017,37(3). |
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| 作者姓名： | 田野 罗飞 刘大博 祁洪飞 陈冬生 罗炳威 周海涛 麦克瓦尔&#;里兹柯夫 |
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| 作者单位： | 1. 北京航空材料研究院,北京,100095;2. 俄罗斯科学院,莫斯科,125009 |
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| 摘 要： | 采用反应溅射和后续退火工艺,在石英衬底上制备具有热致相变特性的VO_2薄膜,并对薄膜的光学性能进行表征。研究发现:在弱光辐射下,随着温度的改变,薄膜的透射率在可见及近红外光区会发生显著变化,具有良好的相变光开关特性;在强光辐射下,制备的VO_2薄膜同样具有良好的红外光调制深度;当脉冲激光波长为1064 nm时,随着脉冲能量的逐渐增强,薄膜的表面反射率逐渐降低,光限幅性能呈现出先升高再降低的趋势,其透射率最低可降至7%,薄膜的脉冲激光损伤阈值约为50 mJ/cm~2。
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| 关 键 词： | VO2 热致相变 激光防护 |
Anti-laser Irradiation Ability of VO2 Films Against Pulsed Power Laser |
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| TIAN Ye,LUO Fei,LIU Dabo,QI Hongfei,CHEN Dongsheng,LUO Bingwei,ZHOU Haitao,Mikhail RYZHKOV.Anti-laser Irradiation Ability of VO2 Films Against Pulsed Power Laser[J].Journal of Aeronautical Materials,2017,37(3). |
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| Authors: | TIAN Ye LUO Fei LIU Dabo QI Hongfei CHEN Dongsheng LUO Bingwei ZHOU Haitao Mikhail RYZHKOV |
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| Abstract: | 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. |
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| Keywords: | VO2 thermochromism laser protection |
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