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Double-slit interference of radially polarized vortex beams

机译：径向偏振涡旋光束的双缝干涉

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摘要

Both radially polarized (RP) and radially polarized vortex (RPV) beams are generated by an experimental setup with one phase-only liquid crystal spatial light modulator which efficiently modulates the phase retardation distributions of input beam by twice reflections. The polarizing properties and double-slit interference of both RP and RPV beams are investigated in detail. Misplacement and tilt appear in double-slit interference fringes of both RP beams and RPV beams in simulations and experiments. The fringe tilt number F in the intermediate region is proportional to the topological charge / of RPV beams with the approximate relation F_s(I) = 0.8125/ in simulations and F_e(I) = 0.8182/ in experiments. The double-slit interference method can be utilized to determine and analyze the topological charge of the beams.
机译：径向偏振（RP）光束和径向偏振涡旋（RPV）光束都是通过一个实验装置生成的，该实验装置使用一个仅相位液晶空间光调制器，该调制器通过两次反射有效地调制输入光束的相位延迟分布。详细研究了RP和RPV光束的偏振特性和双缝干涉。在仿真和实验中，RP光束和RPV光束的双缝干涉条纹中都出现了错位和倾斜。在模拟中，中间区域的边缘倾斜数F与RPV束的拓扑电荷/成正比，在模拟中近似关系为F_s（I）= 0.8125 /，在实验中为F_e（I）= 0.8182 /。双缝干涉法可以用来确定和分析光束的拓扑电荷。

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  • 来源
    《Optical engineering》 |2014年第4期|044107.1-044107.7|共7页
  • 作者

    Junli Qi; Weihua Wang; Xiujian Li; Xiaofeng Wang; Wenchao Sun; Jiali Liao; Yongming Nie;

  • 作者单位

    New Star Institute of Applied Technology, Hefei, Anhui 230031, China,National University of Defense Technology, Science College, Changsha, Hunan 410073, China;

    New Star Institute of Applied Technology, Hefei, Anhui 230031, China;

    National University of Defense Technology, Science College, Changsha, Hunan 410073, China;

    National University of Defense Technology, Science College, Changsha, Hunan 410073, China;

    National University of Defense Technology, Science College, Changsha, Hunan 410073, China;

    National University of Defense Technology, Science College, Changsha, Hunan 410073, China;

    National University of Defense Technology, Science College, Changsha, Hunan 410073, China;

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

    laser beam shaping; double-slit interference; radially polarized vortex beam; spatial light modulator;

    机译：激光束整形;双缝干扰;径向偏振涡旋光束;空间光调制器;

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