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星载成像光谱仪退偏器的设计及测试
Alternative TitleDesign and Test of Depolarizer for Space-Borne Imaging Spectrometer
毛靖华; 王咏梅; 石恩涛; 张仲谋; 王英鉴; 江芳
Department空间环境部
Source Publication光学学报
2017
Volume37Issue:4Pages:423001
ISSN0253-2239
Language中文
Keyword光学器件 伪退偏 双巴比涅退偏器 波动方程 星载成像光谱仪 退偏度
Abstract为保证星载成像光谱仪测量结果的准确性,设计了双巴比涅退偏器。首先利用电磁波理论及光波传输理论分析了双巴比涅退偏器的工作原理,接着根据偏振光在双折射晶体中的传播公式设计出适当的该退偏器的楔角,最后搭建一套偏振测试装置,对研制完成的双巴比涅退偏器的退偏性能进行测试。测试结果表明:该双巴比涅退偏器在-15~15℃入射角范围内具有较好的退偏性能。退偏器楔角选择6°时,能在不影响成像质量的前提下较好地对探测波段退偏,且退偏度不受方位角及频率的影响,退偏度优于99%。该退偏器具有退偏度高、透射比高、性能稳定、体积小等优点。由于测量系统误差,测量不确定度为0.00290。
Other AbstractTo guarantee the measurement accuracy of the space-borne imaging spectrometer,the dual Babinet compensator pseudo-depolarizer (DBCP)is designed.The principle of the DBCP is analyzed by utilizing the electromagnetic wave theory and light wave transmission theory,and a suitable wedge angle of the DBCP is schemed out based on the formula of polarized light propagation in birefringent crystal.The depolarization performance of the DBCP is worked out with a set-up polarization testing device.The results show that the DBCP has a better depolarization performance within the incidence angle range of -15~15℃.When the wedge angle is 6°,the depolarizer can realize depolarization at detection band with degree of depolarization better than 99%.Which is independent of the azimuth angle and frequency,and without affecting the imaging quality.Furthermore,the DBCP has many advantages,such as high degree of depolarization,high transmittance,stable performance and small volume.The uncertainty of measurement is 0.00290,because of the systems error.
Indexed ByEI ; CSCD
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Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/5968
Collection空间环境部
Recommended Citation
GB/T 7714
毛靖华,王咏梅,石恩涛,等. 星载成像光谱仪退偏器的设计及测试[J]. 光学学报,2017,37(4):423001.
APA 毛靖华,王咏梅,石恩涛,张仲谋,王英鉴,&江芳.(2017).星载成像光谱仪退偏器的设计及测试.光学学报,37(4),423001.
MLA 毛靖华,et al."星载成像光谱仪退偏器的设计及测试".光学学报 37.4(2017):423001.
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