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Metamaterial-induced transparency (MIT) displays great application potential, which is significant in building a slow light system, tunable wave filter, and other optical devices. In a classical three-level system, near-field coupling between two resonant modes can generate a single MIT window. We design a polarization-insensitive metasurface, which is composed of T-type resonators (TR), split ring resonators (SRR), and U-type resonators (UR). It can realize the function of manipulating MIT windows in different polarization state. By changing the polarization of THz incident wave, the MIT window is reached to shift the frequency between 0.82 and 1.22 THz. Besides that, we can achieve the switching of MIT window by adjusting the different parameters of metasurface. Moreover, the MIT window can disappear at different frequencies by varying the split direction of SRR. Our study provides a new way for miniaturizing and switching components of terahertz wave bands.

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Polarization Sensitive Metamaterial-Induced Transparent Window Tuned by Parameter-Dependent Resonant Modes

  • 会议论文

  • 发表日期：

    2025年

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  • Zhengrui Zhang,
  • Zhiyuan Zhang,
  • Miao Li,
  • Xuteng Zhang,
  • Longyu Shi,
  • Huiwen Shi,
  • Pujing Zhang,
  • Qingli Zhou,
  • Cunlin Zhang

摘要

Metamaterial-induced transparency (MIT) displays great application potential, which is significant in building a slow light system, tunable wave filter, and other optical devices. In a classical three-level system, near-field coupling between two resonant modes can generate a single MIT window. We design a polarization-insensitive metasurface, which is composed of T-type resonators (TR), split ring resonators (SRR), and U-type resonators (UR). It can realize the function of manipulating MIT windows in different polarization state. By changing the polarization of THz incident wave, the MIT window is reached to shift the frequency between 0.82 and 1.22 THz. Besides that, we can achieve the switching of MIT window by adjusting the different parameters of metasurface. Moreover, the MIT window can disappear at different frequencies by varying the split direction of SRR. Our study provides a new way for miniaturizing and switching components of terahertz wave bands.