中国光学（中英文）2024，Vol.17Issue(6)：1387-1396,10.DOI:10.37188/CO.2024-0041
双液晶偏振光栅系统的倾斜误差特性分析
Tilt error's characteristic analysis of dual liquid crystal polarization grating system
摘要
Abstract
In order to precisely control the direction of laser beams,we analyze the error caused by the grat-ing tilt in the system based on the optical beam pointing algorithm of the dual liquid crystal polarization grat-ing system.Firstly,a ray tracing method based on the diffraction grating equation is used to solve the outgo-ing beam pointing,introducing the incident beam pointing and grating tilt angle.The correctness and accur-acy of this method are verified through comparison with simulation results.Secondly,by analyzing different cases of grating tilt,we provide expressions of the grating attitude under different tilt conditions,and in com-bination with the ray tracing method,obtain the expressions for the outgoing beam pointing for correspond-ing situations,analyzing the zeroing error and rotation error caused by grating tilt.The research results indic-ate that within the 0° to 0.3° grating tilt angle range,the zeroing errors are within 0.25 mrad and 2 mrad re-spectively,and the rotation errors are around 85 mrad and 430 mrad,respectively.We propose a method for accurately calculating the pointing direction and grating tilt errors in the exit beam of a dual liquid crystal po-larization grating system.关键词
激光指向技术/光束指向算法/液晶偏振光栅/光栅方程Key words
laser technology/beam pointing algorithm/liquid crystal polarization grating/grating equation分类
机械制造引用本文复制引用
方远翔,江伦,裴惠熠,王锦疆,崔勇,张家铭..双液晶偏振光栅系统的倾斜误差特性分析[J].中国光学（中英文）,2024,17(6):1387-1396,10.基金项目
国家重点研发计划(No.2022YFB3902502)Supported by National Key Research and Development Program of China(No.2022YFB3902502) （No.2022YFB3902502）
