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<p>We propose and numerically demonstrate two dynamic polarizing beam splitters by applying elastic medium substrates in all-dielectric metasurfaces. The polarizing beam splitting abilities arise from the anisotropy of silicon nanopillars, which are capable of providing different phase profiles for the x- and y-polarized incident waves. The dynamic regulation of beam splitting originates from structural period changes under the external mechanical stretching stimulus. The simulation results show that the designed metasurfaces can achieve excellent polarizing splitting performance for a working wavelength of 1471 nm. The deflection angles of the orthogonally polarized incident lights can be dynamically adjusted by mechanically stretching the elastic substrates. Although these two types of structures are designed at the operating wavelength of 1471 nm, this design method is also suitable for other wavelengths. The presented all-dielectric metasurface might enable promising applications in compact optical systems.</p>

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Dynamic polarizing beam splitter via all-dielectric metasurface with an elastic substrate

  • 期刊论文

  • 发表日期：

    2025年10月31日

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  • Yingshuang Huang,
  • Yujing Lan,
  • Xin Cheng,
  • Zhenyu Li,
  • Zhangpeng Feng,
  • Yintao Tang,
  • Hongyun Li,
  • Tiesheng Wu

摘要

We propose and numerically demonstrate two dynamic polarizing beam splitters by applying elastic medium substrates in all-dielectric metasurfaces. The polarizing beam splitting abilities arise from the anisotropy of silicon nanopillars, which are capable of providing different phase profiles for the x- and y-polarized incident waves. The dynamic regulation of beam splitting originates from structural period changes under the external mechanical stretching stimulus. The simulation results show that the designed metasurfaces can achieve excellent polarizing splitting performance for a working wavelength of 1471 nm. The deflection angles of the orthogonally polarized incident lights can be dynamically adjusted by mechanically stretching the elastic substrates. Although these two types of structures are designed at the operating wavelength of 1471 nm, this design method is also suitable for other wavelengths. The presented all-dielectric metasurface might enable promising applications in compact optical systems.