• Acta Photonica Sinica
  • Vol. 52, Issue 10, 1052421 (2023)
Yueyang JING, Peili LI*, Yajie ZHANG, Yang CAO, and Yu CHEN
Author Affiliations
  • College of Electronic and Optical Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210023,China
  • show less
    DOI: 10.3788/gzxb20235210.1052421 Cite this Article
    Yueyang JING, Peili LI, Yajie ZHANG, Yang CAO, Yu CHEN. Liquid Crystal-based Wide-angle Terahertz Tunable Metasurface Absorber[J]. Acta Photonica Sinica, 2023, 52(10): 1052421 Copy Citation Text show less
    Schematic diagram of the metasurface unit structure
    Fig. 1. Schematic diagram of the metasurface unit structure
    Absorption rate with changes in metasurface unit structure parameters
    Fig. 2. Absorption rate with changes in metasurface unit structure parameters
    Flowchart of inverse design of metasurface structure based on PSO
    Fig. 3. Flowchart of inverse design of metasurface structure based on PSO
    Absorption spectra of TE mode and TM mode when terahertz waves are vertically incident
    Fig. 4. Absorption spectra of TE mode and TM mode when terahertz waves are vertically incident
    Surface electric field E and current distribution J of metasurface absorber under vertical incidence
    Fig. 5. Surface electric field E and current distribution J of metasurface absorber under vertical incidence
    Relative impedance spectra of metasurface absorber
    Fig. 6. Relative impedance spectra of metasurface absorber
    Absorption spectra of TE mode and TM mode when terahertz waves are obliquely incident at an angle of α
    Fig. 7. Absorption spectra of TE mode and TM mode when terahertz waves are obliquely incident at an angle of α
    Surface electric field Eand current distribution Jof metasurface absorber under oblique incidence at 60° and 85°
    Fig. 8. Surface electric field Eand current distribution Jof metasurface absorber under oblique incidence at 60° and 85°
    ReferencePolarizationMaximum measured frequency tunabilityAbsorption for oblique incidence(α=60°)Frequency stability for oblique incidence
    18TE4.59%>75%Low
    19TE2.8%--
    21TE9.3%>90%High
    28TE6.4%>75%Low
    29

    TE

    TM

    4.7%

    4.1%

    >90%

    >40%

    Medium

    Low

    30TE7.8%-Low
    This paper

    TE

    TM

    9%

    4.64%

    >94%

    >94%

    High

    High

    Table 1. Comparison of the main performance parameters of the absorber with similar published literature
    Yueyang JING, Peili LI, Yajie ZHANG, Yang CAO, Yu CHEN. Liquid Crystal-based Wide-angle Terahertz Tunable Metasurface Absorber[J]. Acta Photonica Sinica, 2023, 52(10): 1052421
    Download Citation