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Numerical Analysis of Protection Method of Metallic Sub-Wavelength Concentric Arrays for Radially Polarized Light Selection and Its Applications

机译:径向偏振光选择的金属亚波长同心阵列保护方法及其应用数值分析及其应用

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摘要

Radially polarized light has various advantages on sensing, thanks for its symmetric field distribution. To select radial component, metallic sub-wavelength concentric arrays are widely used. To increase the stability of the metallic nanostructure from mechanical or chemical hazards, a method to apply an additional protective layer has been proposed. The structure was numerically calculated, and optimized structure showed ~97.4% of transmittance for radially polarized component with ~20 dB of polarization extinction ratio compared to the azimuthally polarized component. This result is a 22% increase compared to the case without the protective layer. In addition, the utility the protective layer applied to metallic sub-wavelength concentric arrays is also discussed. The structure has been applied to a binary, concentric optical plate, and showed the same function with radially polarized input, but prohibited azimuthally polarized input. The proposed structure is expected to be applied on numerous centrosymmetric flat optical components.
机译:径向偏振光在感测的各种优点,感谢其对称场分布。为了选择径向分量,广泛使用金属亚波长同心阵列。为了提高金属纳米结构的稳定性,从机械或化学危害中提出了一种施加另外的保护层的方法。该结构在数值计算中,优化的结构显示出与径向偏振分量的径向偏振分量的透射率〜97.4%,与方位相偏振的组分相比,偏振分量〜20dB的偏振消光比。与没有保护层的情况相比,该结果增加了22%。此外,还讨论了应用于金属亚波长同心阵列的保护层。该结构已应用于二进制,同心光盘,并显示出具有径向偏振输入的相同功能,但禁止方位角偏振输入。预计所提出的结构将应用于许多Centroosymmetric扁平光学元件。

著录项

  • 期刊名称 Sensors (Basel Switzerland)
  • 作者

    Hyuntai Kim;

  • 作者单位
  • 年(卷),期 2021(21),13
  • 年度 2021
  • 页码 4480
  • 总页数 10
  • 原文格式 PDF
  • 正文语种
  • 中图分类
  • 关键词

    机译:径向偏振光;纳米光子;二元板;保护层;

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