角反射器对调制偏振光的偏振响应研究  

Polarization Response of Retroreflector to Polarization-Modulated Light

作　　者：高书苑[1,2] 石俊凯[2] 纪荣祎[2] 黎尧[2] 周维虎[1,2,3] Gao Shuyuan;Shi Junkai;Ji Rongyi;Li Yao;Zhou Weihu(School of Instrument Science and Optoelectronic Engineering,Hefei University of Technology Hefei,Anhui 230009,China;Laboratory of Laser Measurement Technology,Academy of Opto-Electronics , Chinese Academy of Sciences,Beijing 100094,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]合肥工业大学仪器科学与光电工程学院,安徽合肥230009 [2]中国科学院光电研究院激光测量技术研究室,北京100094 [3]中国科学院大学,北京100049

出　　处：《中国激光》2018年第12期177-185,共9页Chinese Journal of Lasers

基　　金：国家重大科学仪器设备开发专项(2014YQ09070907);国家自然科学基金(61475162);中国科学院前沿科学重点研究项目(QYZDY-SSW-JSC008);青岛市创业创新领军人才项目[15-10-3-15-(40)-zch]

摘　　要：偏振调制测距方法利用往返调制偏振光传递待测距离相位信息,角反射器作为其合作目标,其对调制偏振光的偏振响应会影响系统性能。为研究该响应,提出调制偏振光的复信号描述方法,在测量系统的全局坐标系下,结合偏振传递参数获得反射调制偏振光的复信号表示。分析了正入射时未镀膜实心(BK7)和空心(Au膜层)角反射器对调制偏振光的偏振响应特性;比较三种常用金属膜层对调制偏振光的保偏性能,并分析角反射器姿态角对保偏特性的影响。计算结果表明:Ag膜层对调制偏振光的保偏性能优于Au膜层和Al膜层;全局坐标系下调制偏振光振幅比受偏摆角影响显著,相位延迟受俯仰角影响显著。研究结果可为偏振调制测距系统的优化设计提供理论指导。The polarization modulation ranging method uses the polarization-modulated light to transmit the measured distance phase information and the polarization response of the retroreflector as its cooperative target affects the system performance. In order to study this response, a complex signal description method of polarization-modulated light is presented. In the global coordinate system, the complex signal representation of reflected polarization-modulated light is obtained with the polarization transfer parameters. Under normal incidence, the polarization responses of uncoated solid (BK7) and hollow (Au film) retroreflectors to polarization-modulated light are analyzed, the polarization-preservation performances of three kinds of common metal coatings to the polarization-modulated light are compared, and the influence of attitude angle of the retroreflector on the polarization-preservation properties is analyzed. The calculation results show that the polarization-preservation performance of Ag film is better than those of Au film and Al film. In the global coordinate system, the amplitude ratio of polarization-modulated light is significantly affected by the deflection angle, and the phase delay is significantly affected by the pitching angle. These results can provide a theoretical guidance for the optimal design of a polarization modulation ranging system.

关 键 词：测量 激光测距 偏振响应 调制偏振光 角反射器 

分 类 号：TH711[机械工程—测试计量技术及仪器]