双Wollaston棱镜偏振测量系统棱镜安置误差分析

研究双Wollaston棱镜偏振测量系统分光棱镜安置误差对测量精度的影响. 从安置误差对Stockes参量测量的影响出发,研究棱镜纵向、横向及两棱镜光轴夹角的安置误差引起的测量误差. 结果表明:对于一定的偏振测量精度,纵向、横向允许的安置误差随波长和目标偏振度的变化而变化,两棱镜光轴夹角允许的安置误差则为固定值. 研究结果为双Wollaston棱镜偏振测量系统的设计提供了理论依据. 

Analysis of Prisms' Misalignment Errors in Dual Wollaston Prisms Polarization Detector

This research analyzes the influence of Wollaston prisms' misalignment errors on the measurement accuracy. The misalignment errors of prisms in longitude and horizontal as well as the cross angle between two optical axes of the Wollaston prisms have been studied based on the inversion of the Stokes parameters. The result shows that, for a given accuracy of polarization measurement, the acceptable longitudinal and horizontal misalignment errors changes with the variance of wavelength and degree of polarization, while the acceptable misalignment error of cross angle between two optical axes is a fixed value. The conclusion provides a theoretical basis for the design of dual-Wollaston prisms polarization detector.