空间带电粒子辐照对1064nm激光薄膜的性能影响

发布时间：2018-04-01 20:33

本文选题：空间环境　切入点：带电粒子　出处：《光电工程》2016年02期

【摘要】：在空间环境中运行的激光系统必须遭受带电粒子的辐照,光学薄膜往往是激光系统中最薄弱的环节,其性能和稳定性易受带电粒子辐照的影响。我们采用离子束溅射法制备了1 064 nm单波段双面增透膜样品,测得1 064nm处透射率为99.964 5%,吸收为50 ppm,用低能质子和电子(40 Ke V)模拟空间带电粒子辐照样品,辐照通量为1.8×10~(13)个/cm~2,辐照引起样品1 064 nm处透射率下降362 ppm,吸收增加5 ppm;退火处理后,样品的光学性能恢复。结合SRIM程序模拟计算和分析,提出膜层内空位损伤是引起薄膜1 064 nm处光学性能退化的原因。
[Abstract]:A laser system operating in a space environment must be irradiated by charged particles, and optical thin films are often the weakest link in a laser system. The properties and stability of the films are easily affected by the irradiation of charged particles. We have prepared 1064nm single-band double-sided antireflection films by ion beam sputtering. At 1 064nm, the transmittance is 99.964 and the absorption is 50 ppm.The irradiated samples are simulated with low-energy protons and electron ions 40Ke V). The radiation flux is 1.8 脳 10 ~ (13) / cm ~ (-2). The transmittance of the sample decreases by 362ppm at 1064nm, and the absorption increases by 5 ppm after annealing. Based on the simulation and analysis of the SRIM program, it is suggested that the damage of the vacancy in the film is the cause of the degradation of the optical properties at 1 064 nm.
【作者单位】：中国科学院光电技术研究所;中国科学院大学;
【分类号】：TN24

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