在使用自适应光学系统校正的激光传输系统中,光学薄膜的偏振效应会造成偏振色差,导致自适应光学系统的校正能力下降。基于激光传输系统中常用的卡塞格林系统,用琼斯矩阵描述了光学薄膜产生的偏振像差对振幅和相位的影响,使用奇异值分解法将标量波前从琼斯光瞳中分离出来,并用于模拟哈特曼波前探测器的波前探测和像差分析,最后利用Zernike多项式进行波前拟合。最终定量分析了光学薄膜的偏振色差对自适应光学系统校正能力的影响。

In a laser transmission system that uses an adaptive optical system, the polarization effect of optical thin films will cause the polarization chromatic aberration, decreasing the correction ability of the system. In this study, the polarization chromatic aberration analysis of the Cassegrain system is performed. First, we employ the Jones Matrix to describe the impact of the polarization aberration caused by optical thin films on the amplitude and phase. Then, the scalar wavefront is extracted from the Jones pupil using the singular value decomposition method, and is used to the wavefront detector and aberration analysis of a Hartmann wavefront detector. The wavefront fitting is performed using Zernike polynomials. Finally, we analyze the reduction of the correction ability of the adaptive optical system.