完美偏振奇异光场的模拟生成  

Simulated Generation of Perfect Polarization Singularity Light Fields

作　　者：叶东 李宗辰 张颐 李俊瑶 马艺宁 Ye Dong;Li Zongchen;Zhang Yi;Li Junyao;Ma Yining(Department of Criminal Science and Technology,Jiangsu Police Institute,Nanjing 210031,Jiangsu,China)

机构地区：[1]江苏警官学院刑事科学技术系,江苏南京210031

出　　处：《激光与光电子学进展》2023年第7期305-310,共6页Laser & Optoelectronics Progress

基　　金：江苏省自然科学基金(BK20190809);江苏省公安厅公安理论及软科学项目(2020LX005);江苏省高等学校自然科学研究面上项目(19KJD510002,21KJD510005,21KJD620002);江苏警官学院高层次引进人才科研启动项目(JSPI19GKZL404);公安技术“十四五”江苏省重点学科项目。

摘　　要：近年来,完美涡旋光束被提出并得到了研究。结合完美涡旋光束和偏振奇异以生成完美偏振奇异光场。将2束正交圆偏振的拓扑荷数不同的完美拉盖尔-高斯光束叠加,得到完美偏振奇异光场,实验结果表明:完美偏振奇异光场的半径比传统的偏振奇异光场半径小得多。此外,研究了不同情形的正交圆偏振的完美拉盖尔-高斯光束与传统拉盖尔-高斯光束的叠加,其叠加光场的偏振态表现各异,并且出现了“准高阶偏振奇异”的现象。完美奇异点的模拟生成拓宽了奇异光学的理论研究范畴。Recently,perfect vortex beams have been proposed and studied.Therefore,in this paper,we combine perfect vortex beams and polarization singularities to generate perfect polarization singularity light fields by superimposing two orthogonal circularly polarized perfect Laguerre-Gaussian beams with different topological charges.The results show that the radius of the perfect singular field is much smaller than that of the conventional singular field.We also study the superposition of orthogonal circularly polarized perfect Laguerre-Gaussian and conventional Laguerre-Gaussian beams for different cases.Consequently,we obtain that the polarization states of the superimposed light fields are different,and the phenomenon of“quasi-high-order polarization singularities”appears.Moreover,the simulation of perfect singularities has broadened the theoretical study of singular optics.

关 键 词：奇异光学 激光光学 偏振奇异 完美拉盖尔-高斯光束 

分 类 号：O436[机械工程—光学工程]