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Flattop shaped creation based on strong focusing of circularly polarized vortex beams

机译：基于圆偏振涡旋光束强聚焦的平顶形状创作

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摘要

Because circularly polarized vortex beam can be characterized as the linear superposition of radially polarized and azimuthally polarized components in the cylindrical coordinate. When investigating the focusing properties of the circularly polarized vortex beam, we must consider radially polarized vortex beam has azimuthal component and azimuthally polarized vortex beam has radial component after focusing. Due to this reason, the focusing properties of the circularly polarized vortex beams have been restudied based on the amending the tightly focusing formula of the circularly polarized vortex beam. The results show that not only the focusing of the single handedness of the circularly polarized vortex beam but also the focusing of superposition of two circularly polarized vortex beams with different topological charges and different handedness can generate the flat-top intensity shape. We also investigate the influence of amplitude ratio, waist radius and the aperture blocking on the flat-topped focus size.
机译：因为圆极化的涡旋光束可以表征为圆柱坐标中径向极化和方位极化分量的线性叠加。在研究圆偏振涡旋光束的聚焦特性时，必须考虑聚焦后的径向偏振涡旋光束具有方位分量，而方位偏振偏振涡旋光束具有径向分量。因此，基于修正圆偏振涡旋光束的紧密聚焦公式，对圆偏振涡旋光束的聚焦特性进行了重新研究。结果表明，不仅聚焦圆偏振涡旋光束的单手性，而且聚焦具有不同拓扑电荷和不同旋涡性的两个圆偏振涡流光束的叠加，都可以产生平顶强度形状。我们还研究了振幅比，腰围半径和光圈阻塞对平顶焦点尺寸的影响。

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  • 来源
    《Journal of Optics》 |2017年第2期|164-169|共6页
  • 作者

    Wen Yuan; Qin Guo; Minghuang Sang; Yanfang Yang;

  • 作者单位

    College of Physics and Communication Electronics, Jiangxi Normal University, Nanchang 330022, China;

    College of Physics and Communication Electronics, Jiangxi Normal University, Nanchang 330022, China;

    College of Physics and Communication Electronics, Jiangxi Normal University, Nanchang 330022, China;

    Department of Physics, College of Sciences, Shanghai University, Shanghai 200444, China;

  • 收录信息 美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Physical optics; Polarization; Focusing; Flattop beam;

    机译：物理光学;偏振;专注;平顶梁;

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