部分相干幂指数相位涡旋光束的传输特性研究  

Propagation properties of partially coheren power-exponent-phase vortex beam

作　　者：陈康 马志远 张明明 窦健泰 胡友友 Chen Kang;Ma Zhi-Yuan;Zhang Ming-Ming;Dou Jian-Tai;Hu You-You(Department of Optoelectronic Information of Science and Engineering,School of Science,Jiangsu University of Science and Technology,Zhenjiang 212100,China;Applied Optics Research Center,School of Science,Jiangsu University of Science and Technology,Zhenjiang 212100,China)

机构地区：[1]江苏科技大学理学院光电信息科学与工程系,镇江212100 [2]江苏科技大学理学院应用光学研究中心,镇江212100

出　　处：《物理学报》2022年第1期108-115,共8页Acta Physica Sinica

基　　金：江苏省自然科学基金青年基金(批准号:BK20190953);镇江市重点研发计划-产业前瞻与共性关键技术(批准号:GY2020003)资助的课题。

摘　　要：本文针对部分相干幂指数相位涡旋光束的传输特性开展研究,首先建立了部分相干幂指数相位涡旋光束的传输理论模型;然后,仿真研究了部分相干幂指数相位涡旋光束在自由空间和ABCD光学系统中的传输特性,研究结果表明部分相干幂指数相位涡旋光束在自由空间传输时,拓扑荷数、幂指数和相干长度都对光强的分布有着一定的影响,而随着传播距离的增大光斑的面积逐渐增大;当光束在聚焦系统中传输时,只有拓扑荷数和幂指数的变化会影响光强的分布,而相干长度对光束整体强度的分布没有太大的影响,只影响了光斑的质量.本文研究成果揭示了部分相干幂指数相位涡旋光束的传输特性,为其在光学捕获等领域的应用打下了理论基础,对促进新型光场调控理论及应用研究具有重要的意义.In this work, the propagation properties of partially coherent power-exponent-phase vortex beam are studied. Firstly, the propagation model of partially coherent power-exponent-phase vortex beam is established.Then, the propagation properties of partially coherent power-exponent-phase vortex beams in free space and ABCD optical system are simulated. The results show that when power-exponent-phase vortex beams propagate in free space, the topological charge, power order and coherence length have a great influence on the distribution of light intensity, and the area of light spot gradually increases with the increase of propagation distance. When the beam propagates in a focusing system, the changes of topological charge and power order will affect the light intensity distribution, while the coherence length has little effect on the overall intensity distribution of the beam, but only the quality of the spot. The research results of this work reveal the propagation properties of partially coherent power-exponent-phase vortex beam, which will lay a theoretical foundation for its applications in optical capture and other fields, and has important significance in promoting the theory and applications of new light field regulation.

关 键 词：部分相干光束 幂指数相位涡旋光束 传输特性 光强分布 

分 类 号：O43[机械工程—光学工程]