中国激光, 2020, 47 (5): 0500006, 网络出版: 2020-05-12   

复杂涡旋结构光场的产生方法 下载: 2703次特邀综述

Generation Methods for Complex Vortex Structured Light Field
柳强 1,2,*潘婧 1,2万震松 1,2申艺杰 1,2张恒康 1,2付星 1,2巩马理 1,2
作者单位
1 清华大学精密仪器系, 北京100084
2 光子测控技术教育部重点实验室, 北京100084
摘要
涡旋光是一种携带轨道角动量、相位面呈螺旋状分布的新型结构光场,在量子纠缠、量子通信、光学微操控等领域已经获得了广泛应用。随着研究的深入,具有比传统涡旋光更复杂的拓扑结构、相位奇点、轨道角动量和偏振奇点的结构光场的产生,吸引了众多研究人员的兴趣。从固体激光腔内直接激发产生空间结构光和腔外调控得到空间结构光出发,分别介绍了离轴泵浦加像散转换、调制元件调制波形、泵浦整形三种腔内方法,以及空间光调制器光场定制、模式叠加、超构表面微结构设计的三种腔外方法,并分析比较了几种方法的优缺点,展望了未来空间涡旋结构光场的发展趋势。
Abstract
Vortex beam is a new type of structured light field carrying orbital angular momentum, with a spirally distributed phase surface. It has great application potential in fields such as quantum entanglement, quantum telecommunication, and microparticle control. With further research, structured light carrying more complex topological structures, phase singularities, orbital angular momentums, and polarization singularities than traditional vortex beams has been produced and has drawn the attention of many researchers. Focusing on two distinct mechanisms, i.e., generating spatially structured light straight from a solid-laser cavity and controlling the light field out of solid-laser cavity, we introduce methods on off-axis pumping and astigmatism conversion from the cavity, modulating elements from the cavity, pump shaping from the cavity, customizing the optical field out of cavity by a spatial light modulator, mode superposition out of cavity, and controlling the metasurface microstructures out of cavity. Moreover, the strengths and weaknesses of these methods and the trend in the development of spatial structured light have been described in this article.

柳强, 潘婧, 万震松, 申艺杰, 张恒康, 付星, 巩马理. 复杂涡旋结构光场的产生方法[J]. 中国激光, 2020, 47(5): 0500006. Qiang Liu, Jing Pan, Zhensong Wan, Yijie Shen, Hengkang Zhang, Xing Fu, Mali Gong. Generation Methods for Complex Vortex Structured Light Field[J]. Chinese Journal of Lasers, 2020, 47(5): 0500006.

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