光学学报, 2018, 38 (11): 1131001, 网络出版: 2019-05-09   

空间原子氧对保偏反射镜偏振对比度的影响 下载: 972次封面文章

Effect of Spatial Atomic Oxygen on Polarization Contrast of Polarization-Maintaining Mirror
作者单位
中国科学院上海技术物理研究所, 上海 200083
摘要
选择金属膜层材料Ag和Ta2O5、SiO2、Al2O3等多种介质薄膜材料,在石英基底上设计和制备了保偏反射镜,其在810 nm和850 nm波长处的偏振对比度优于10000∶1。结合保偏反射镜所处的轨道环境,进行了原子氧模拟实验,研究了保偏反射镜样品偏振对比度的变化规律。结果表明,随着原子氧剂量的增加,保偏反射镜的偏振对比度呈衰减趋势,且+45°、-45°方向的衰减较水平(H)、垂直(V)方向的更明显。
Abstract
The metal coating material of Ag and dielectric thin film materials such as Ta2O5, SiO2 and Al2O3 are selected for designing and fabricating a kind of polarization-maintaining mirror on the quartz substrate, whose polarization contrasts at wavelengths of 810 nm and 850 nm are superior to 10000∶1. With the combination of the orbital environment for the polarization-maintaining mirror, the experiment for simulating the spatial atomic oxygen is conducted and the change law of polarization contrast of the polarization-maintaining mirror sample is investigated. The results show that, with the increase of the dose of the atomic oxygen, the polarization contrast of the polarization-maintaining mirror shows an overall decreasing trend. Moreover, the decreasing trends along the directions of +45° and -45° are more obvious than those along the horizontal (H) and vertical (V) directions.

段微波, 李大琪, 刘保剑, 余德明, 陈刚, 刘定权. 空间原子氧对保偏反射镜偏振对比度的影响[J]. 光学学报, 2018, 38(11): 1131001. Weibo Duan, Daqi Li, Baojian Liu, Deming Yu, Gang Chen, Dingquan Liu. Effect of Spatial Atomic Oxygen on Polarization Contrast of Polarization-Maintaining Mirror[J]. Acta Optica Sinica, 2018, 38(11): 1131001.

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