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线偏振相位涡旋光束的像散特性

龙凤琼 郑世杰 李玮 罗韵 王建军 冯国英

龙凤琼, 郑世杰, 李玮, 等. 线偏振相位涡旋光束的像散特性[J]. 强激光与粒子束, 2020, 32: 081005. doi: 10.11884/HPLPB202032.200025
引用本文: 龙凤琼, 郑世杰, 李玮, 等. 线偏振相位涡旋光束的像散特性[J]. 强激光与粒子束, 2020, 32: 081005. doi: 10.11884/HPLPB202032.200025
Long Fengqiong, Zheng Shijie, Li Wei, et al. Astigmatic characteristics of linearly polarized phase vortex beam[J]. High Power Laser and Particle Beams, 2020, 32: 081005. doi: 10.11884/HPLPB202032.200025
Citation: Long Fengqiong, Zheng Shijie, Li Wei, et al. Astigmatic characteristics of linearly polarized phase vortex beam[J]. High Power Laser and Particle Beams, 2020, 32: 081005. doi: 10.11884/HPLPB202032.200025

线偏振相位涡旋光束的像散特性

doi: 10.11884/HPLPB202032.200025
基金项目: 国家自然科学基金委-中国工程物理研究院联合基金项目(U1730141)
详细信息
    作者简介:

    龙凤琼(1995—),女,硕士,从事激光光束质量表征研究;1372632435@qq.com

    通讯作者:

    李 玮(1982—),女,副教授,从事激光光束质量、超连续谱激光研究;weili@scu.edu.cn

    冯国英(1969—),女,教授,从事激光微纳工程研究;guoing_feng@scu.edu.cn

  • 中图分类号: TN248

Astigmatic characteristics of linearly polarized phase vortex beam

  • 摘要: 提出采用像散系数表征涡旋光束的像散特性。利用螺旋相位板产生了线偏振相位涡旋光束,并对其光束质量及像散特性进行了实际测量。数值模拟了不同拓扑荷数的涡旋光束的传输特性及光束质量,分析了像散系数随拓扑荷数变化的规律,结果表明:当拓扑荷数为整数时,光束无像散,像散系数为零;当拓扑荷数为半奇数时,光束的像散特性明显,像散系数达到极大值;随着拓扑荷数整数部分的增加,像散系数的极大值减小。
  • 图  1  不同拓扑荷数的涡旋光束在不同传输位置的光斑图

    Figure  1.  Spot images of a vortex beam with different topological charges at different transmission locations

    图  2  具有不同拓扑荷数的涡旋光束光斑半径随传输距离变化的曲线

    Figure  2.  Spot radius of a vortex beam with different topological charges vs propagation distance

    图  3  涡旋光束的拓扑荷数取不同值时,光束质量参数随旋转角度的变化曲线

    Figure  3.  ${M^2}$ factor values of a vortex beam with different topological charges versus rotation angle

    图  4  光束质量参数随拓扑荷数变化的曲线

    Figure  4.  $M^2$ factor as a function of topological charge

    图  5  在不同传输位置处,CCD接收到的光斑图

    Figure  5.  Spot images detected by CCD at different transmission locations

    图  6  光束质量参数随旋转角度变化的曲线

    Figure  6.  ${M^2}$ factor values versus rotation angle

    图  7  像散系数随拓扑荷数变化的曲线

    Figure  7.  Astigmatic coefficient as a function of topological charge

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出版历程
  • 收稿日期:  2020-05-06
  • 修回日期:  2020-07-15
  • 刊出日期:  2020-08-13

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