多级共焦抛物面反射式激光扩束系统光学设计  

Optical Design of Multi-Stage Confocal Parabolic Reflection Laser Beam Expander

作　　者：陈和 孙雨婷 檀望舒 陈思颖 张寅超 郭磐 王立福 蒋广翔 李鑫[2] Chen He;Sun Yuting;Tan Wangshu;Chen Siying;Zhang Yinchao;Guo Pan;Wang Lifu;Jiang Guangxiang;Li Xin(Key Laboratory of Photoelectric Imaging Technology and Systems,Ministry of Education,School of Optics and Photonics,Beijing Institute of Technology,Beijing 100081,China;Academy of Military Medical Sciences,Beijing 100850,China)

机构地区：[1]北京理工大学光电学院光电成像技术与系统教育部重点实验室,北京100081 [2]中国人民解放军军事医学科学院,北京100850

出　　处：《光学学报》2022年第13期135-141,共7页Acta Optica Sinica

基　　金：中国博士后科学基金(2020M680369)。

摘　　要：激光扩束系统可以扩大激光光束直径、压缩空间发散角,被广泛应用在激光测距、大气探测等领域。为了压缩激光扩束系统的外形尺寸,减小出射与入射光束之间的距离,设计了一种由多个共焦离轴抛物面镜组构成的多级反射式激光扩束系统。根据设计指标,计算了多级反射式激光扩束系统的系统参数,使用ZEMAX光学设计软件对单组扩束系统和两个多级扩束系统进行了仿真和公差分析,对比了单组扩束系统和多级扩束系统的尺寸和公差。结果表明,在比较宽松的公差范围内,多级扩束系统能够实现在更短距离上的高倍激光扩束。The laser beam expander, which can expand the beam diameter and compress the divergence angle, is widely used in laser ranging, atmospheric detection, and other fields. In order to compress the external dimensions of the laser beam expander and reduce the distance between the output beam and the input beam, a multi-stage reflection laser beam expander composed of multiple confocal off-axis parabolic mirrors is proposed in the paper. According to the design requirements, the system parameters of the multi-stage reflection laser beam expanders are calculated. A single-group beam expander and two multi-stage beam expanders are simulated, and their tolerances are analyzed by ZEMAX optical design software. The dimensions and tolerances of the single-group beam expander and the multi-stage beam expanders are compared. The results show that the multi-stage beam expander can achieve high-magnification laser beam expansion in a shorter distance within a relatively loose tolerance range.

关 键 词：光学设计 激光扩束系统 多级 反射式 离轴抛物面镜 

分 类 号：TN249[电子电信—物理电子学]