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减速圆艾里光束的产生及其聚焦特性

Generation and Focusing Property of Circular Decelerating Airy Beams

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摘要

提出了一种在3/2相位分布上叠加倾斜相位的方法, 并制备了主瓣向旁瓣方向弯曲的减速艾里光束(DABs)。通过调节叠加相位的倾斜因子, 得到了不同轨迹的DABs。在圆对称形式下, 叠加圆倾斜相位, 产生了减速圆艾里光束(CDABs)。通过数值模拟研究了CDABs自聚焦及紧聚焦的特性。在自聚焦中, 产生的主瓣包围旁瓣的CDABs可用于微粒操控;紧聚焦时, 类似于加速艾里光束, CDABs也会产生光链和光针焦点, 但其焦点位置和分布可通过相位倾斜因子进行调节。这些结果为获得新型艾里光束及扩大其应用范围提供了一定的参考。

Abstract

A method based on the superposition of oblique phase in the 3/2 phase distribution is proposed to generate the decelerating Airy beams (DABs) whose main lobes are bent toward side lobes. By adjusting the obliquity factor of the superposition phase, the DABs with different trajectories are obtained. In the circular symmetry case, the circular DABs (CDABs) are generated by the superposition of circular oblique phase. The self-focusing and tight focusing properties of CDABs are invesitigated by numerical simulation. In the self-focusing case, the generated CDABs whose side lobes are surrounded by the main lobes can be used in particle manipulation. In the tight focusing case, the CDABs can produce a spot chain or a light needle which behavior is similar to that of the accelerating Airy beams, but the focus position and distribution can be adjusted by the phase obliquity factor. These results provide a reference on obtaining new Airy beams and expanding their applications.

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中图分类号:O436.1

DOI:10.3788/lop54.082601

所属栏目:物理光学

基金项目:教育部长江学者和创新团队发展计划(IRT13064)、广东省自然科学基金(2014A030313446)

收稿日期:2017-04-05

修改稿日期:2017-04-14

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胡迪:华南师范大学广东省高校特种功能光纤工程技术研究中心, 广东 广州 510006华南师范大学信息光电子科技学院, 广东 广州 510006
欧小婷:华南师范大学广东省高校特种功能光纤工程技术研究中心, 广东 广州 510006华南师范大学信息光电子科技学院, 广东 广州 510006
饶飞:华南师范大学广东省高校特种功能光纤工程技术研究中心, 广东 广州 510006华南师范大学信息光电子科技学院, 广东 广州 510006
王娟娟:华南师范大学广东省高校特种功能光纤工程技术研究中心, 广东 广州 510006华南师范大学信息光电子科技学院, 广东 广州 510006
黄旭光:华南师范大学广东省高校特种功能光纤工程技术研究中心, 广东 广州 510006华南师范大学信息光电子科技学院, 广东 广州 510006

联系人作者:胡迪(hudi@m.scnu.edu.cn)

备注:胡迪(1991-), 女, 硕士研究生, 主要从事无衍射光束的产生及应用方面的研究。

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引用该论文

Hu Di,Ou Xiaoting,Rao Fei,Wang Juanjuan,Huang Xuguang. Generation and Focusing Property of Circular Decelerating Airy Beams[J]. Laser & Optoelectronics Progress, 2017, 54(8): 082601

胡迪,欧小婷,饶飞,王娟娟,黄旭光. 减速圆艾里光束的产生及其聚焦特性[J]. 激光与光电子学进展, 2017, 54(8): 082601

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