矢量涡旋光束的生成与模式识别方法  

Generation and Mode Recognition Method of Vectorial Vortex Beams

作　　者：付时尧 高春清[1,2,3] Fu Shiyao;Gao Chunqing(School of Optics and Photonics,Beijing Institute of Technology,Beijing 100081,China;Key Laboratory of Information Photonics Technology,Ministry of Industry and Information Technology,Beijing 100081,China;Key Laboratory of Photoelectronic Imaging Technology and System,Ministry of Education,Beijing 100081,China)

机构地区：[1]北京理工大学光电学院,北京100081 [2]信息光子技术工业和信息化部重点实验室,北京100081 [3]光电成像技术与系统教育部重点实验室,北京100081

出　　处：《光学学报》2023年第15期362-371,共10页Acta Optica Sinica

基　　金：国家重点研发计划(2022YFB3607700);国家自然科学基金(11834001,61905012);国防基础科研计划(JCKY2020602C007);北京市自然科学基金(1232031);中央高校基本科研业务费专项资金(2022CX11006);教育部基金(8091B042109)。

摘　　要：与宏观物体类似,光子等微观粒子也可携带角动量。光子的角动量包括自旋角动量和轨道角动量,两种角动量的共同作用产生了一种新型结构光束,即矢量涡旋光束。矢量涡旋光束具有各向异性的波面和偏振分布,提供了多种光场自由度,在量子技术、光通信、激光探测、激光加工、高分辨成像、光镊等前沿领域展现了巨大的应用潜力,吸引了国内外学者的广泛关注。高效地生成矢量涡旋光束,以及高精度地识别矢量涡旋光束的模式分布,是其应用的关键。本文简要回顾了国内外学者在矢量涡旋光束的生成与模式识别方面的研究工作,同时系统梳理了本文作者过去十年在该方面的研究进展,重点介绍了其相关代表性成果。Significance Similar to macroscopic objects,photons can also carry angular momentum,such as spin angular momentum(SAM)and orbital angular momentum(OAM).The two angular momenta contribute to a new structured beam,the vectorial vortex beam(VVB).A VVB has anisotropic wavefront and polarization distributions,thus providing multiple degrees of freedom and showing great potential in lots of advanced domains including quantum technology,laser communications,laser detection,laser processing,high-resolution imaging,and optical tweezers,attracting much attention around the world.The key to employing VVBs in these above scenarios is their generation and recognition with high performance.We review recent advances in generating and diagnosing VVBs in brief.In addition,we also systematically review research on this topic from our team in the past decade and focus more on our representative achievements.Progress This review consists of three main sections.The basic principles of VVBs are introduced in the first section.The introduction begins with the decomposition of VVBs,as a VVB can be regarded as the coaxial superposition of two scalar beams with opposite SAM and various OAMs.Then,typical representations of VVBs,the hybrid order Stokes parameters,and Poincare spheres are reviewed.Finally,our recent demonstration for VVB mode representation,the fourparameter notation,and its great performance is introduced.The second section presents recent advances in VVB generation,including extra-and intra-cavity generations.The extra-cavity generation scheme is to transform other beams containing Gaussian beams and Hermit-Gauss beams into VVBs outside a laser resonator,whose principle is based on the decomposition of VVBs.In addition,such a scheme is flexible to produce more complex vectorial vortex fields,including the VVB array and perfect vortex array.By employing programmable devices of the liquid-crystal spatial light modulator,VVBs can also be generated digitally.The intra-cavity generation scheme is to output VVBs from a laser res

关 键 词：物理光学 激光光场调控 矢量涡旋光束 轨道角动量 自旋角动量 

分 类 号：O436[机械工程—光学工程]