相息图错位对级联空间光调制器产生高阶厄米高斯模的影响分析  

Analysis of the influence of hologram misalignment on the generation of higher-order Hermite-Gaussian modes using cascaded spatial light modulators

作　　者：马龙 燕曼君 蔡春晓 MA Long;YAN Manjun;CAI Chunxiao(School of Computer Science and Engineering,Chongqing Three Gorges University,Chongqing 404100,China;Key Laboratory of Intelligent Information Processing and Control of Chongqing Municipal Institutions of Higher Education,Chongqing Three Gorges University,Chongqing 404100,China;Chongqing Engineering Research Center of Internet of Things and Intelligent Control Technology,Chongqing Three Gorges University,Chongqing 404100,China;National Key Laboratory of Science and Technology on Space Microwave,China Academy of Space Technology(Xi’an),Xi’an 710100,China)

机构地区：[1]重庆三峡学院计算机科学与工程学院,重庆404100 [2]重庆三峡学院智能信息处理与控制重庆高校市级重点实验室,重庆404100 [3]重庆三峡学院物联网与智能控制技术重庆市工程研究中心,重庆404100 [4]中国空间技术研究院西安分院空间微波通信全国重点实验室,西安710100

出　　处：《激光杂志》2025年第3期34-39,共6页Laser Journal

基　　金：国家自然科学基金(No.62005211);重庆市自然科学基金(No.CSTB2022NSCQ-BHX0700);重庆市教委科学技术研究项目(No.KJZD-M202201204,KJQN202201217);重庆万州区科学技术局科技创新智慧农业项目(No.2022-17);重庆三峡学院引进人才科研启动项目(No.0903321)。

摘　　要：高阶厄米高斯模由于其复杂的空间分布,在精密测量、光通信、激光加工等领域具有广泛应用。尽管利用级联空间光调制器可以高效产生高阶厄米高斯模,但实验系统对光场与相息图的对准要求极高,这成为限制其高质量生成的关键因素。深入分析了第二台空间光调制器平面上光场与其加载的相息图之间错位对高阶厄米高斯模产生质量的影响。结果表明,第二台空间光调制器平面上光场与其加载的相息图在横向方向需实现微米级对准,纵向方向则需毫米级对准。基于此,提出了一种实验操作简单的方法,用以实现第二台空间光调制器平面上光场与其加载的相息图之间的精确对准,为高效高质量产生高阶厄米高斯模提供了重要参考,对推动光学成像、精密测量及量子信息处理等领域的发展具有重要意义。Due to its complex spatial distribution,the higher-order Hermite-Gaussian modes has a wide range of applications in precision measurement,optical communications,and laser processing.Although the higher-order Hermite-Gaussian modes can be efficiently generated using cascaded spatial light modulators,the experimental system has extremely high alignment requirements for the optical field and the hologram,which becomes a key factor limiting their high-quality generation.This paper provides a deep analysis of the impact of misalignment between the optical field on the plane of the second spatial light modulator and the hologram loaded onto it.The results indicate that micro-level alignment in the lateral direction and millimeter-level alignment in the longitudinal direction are required between the optical field on the plane of the second spatial light modulator and the hologram loaded onto it.Additionally,this paper proposes an experimentally simple method to achieve precise alignment between the optical field on the plane of the second spatial light modulator and the hologram loaded onto it,providing important reference for efficiently generating the higher-order Hermite-Gaussian modes with high quality.This research is of great significance for advancing the development of optical imaging,precision measurement,quantum information processing,and other fields.

关 键 词：高阶厄米高斯模 空间光调制器 相位恢复 相息图 模式纯度 

分 类 号：O436[机械工程—光学工程]