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Chinese Journal of Lasers, Volume. 46, Issue 6, 0614034(2019)

Broadband Terahertz Metamaterial Absorber Based on Double Composite Structure Layers

Jinjun Bai1、*, Meilan Ge1, Haiying Xing1, Xiaodong Sun1, Junfa Zhao1, and Shengjiang Chang2
Author Affiliations
  • 1 Tianjin Key Laboratory of Optoelectronic Detection Technology and Systems, School of Electronics and Information Engineering, Tianjin Polytechnic University, Tianjin 300387, China
  • 2 Institute of Modern Optics, Nankai University, Tianjin 300071, China
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    AbstractGet PDF(in Chinese)
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    Structural diagram of terahertz metamaterial absorber. (a) Periodic unit structure; (b) composite structure layer Ⅱ

    Fig. 1. Structural diagram of terahertz metamaterial absorber. (a) Periodic unit structure; (b) composite structure layer Ⅱ

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    Absorption spectra terahertz metamaterial absorber when θ=0°. (a) TM; (b) TE

    Fig. 2. Absorption spectra terahertz metamaterial absorber when θ=0°. (a) TM; (b) TE

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    Magnetic field intensity distributions of terahertz metamaterial absorber at different resonance frequencies. (a) 1.704 THz;(b) 1.788 THz; (c) 1.894 THz; (d) 1.922 THz; (e) 2.086 THz; (f) 2.192 THz; (g) 2.278 THz; (h) 2.374 THz

    Fig. 3. Magnetic field intensity distributions of terahertz metamaterial absorber at different resonance frequencies. (a) 1.704 THz;(b) 1.788 THz; (c) 1.894 THz; (d) 1.922 THz; (e) 2.086 THz; (f) 2.192 THz; (g) 2.278 THz; (h) 2.374 THz

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    Surface current density distributions of terahertz metamaterial absorber under different phase angles and resonance frequencies. (a)(b) 0°, 2.278 THz; (c)(d) 90°, 2.278 THz; (e)(f) 0°, 2.374 THz; (g)(h) 90°, 2.374 THz

    Fig. 4. Surface current density distributions of terahertz metamaterial absorber under different phase angles and resonance frequencies. (a)(b) 0°, 2.278 THz; (c)(d) 90°, 2.278 THz; (e)(f) 0°, 2.374 THz; (g)(h) 90°, 2.374 THz

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    Calculated absorption spectra under different polarization angles

    Fig. 5. Calculated absorption spectra under different polarization angles

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    Calculated absorption spectra under different incident angles. (a) TE; (b) TM

    Fig. 6. Calculated absorption spectra under different incident angles. (a) TE; (b) TM

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    • Table 1. Structural parameters and physical parameters of materials

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      Table 1. Structural parameters and physical parameters of materials

      LayerStructural parameterMaterial
      NamePhysical parameter
      CSL-IARA=15.96 μm,rA=10.96 μmGold (Au)ρ=4.09×107 S·m-1
      BRB=15.20 μm,rB=10.20 μm
      CRC=14.60 μm,rC=9.60 μm
      DRD=14.05 μm,rD=9.05 μm,t1=0.2 μm
      Dielectric layer (Ⅰ)L=120 μm,t2=6.60 μmPolyimideε=3.5+i0.09
      CSL-ⅡElE=36.50 μm,t1=0.2 μmGold (Au)ρ=4.09×107 S·m-1
      FlF=33.84 μm,t1=0.2 μm
      GlG=31.80 μm,t1=0.2 μm
      HlH=29.76 μm,t1=0.2 μm
      Dielectric layer (Ⅱ)L=120 μm,t3=4.5 μmPolyimideε=3.5+i0.09
      Metallic boardL=120 μm,t1=0.2 μmGold (Au)ρ=4.09×107 S·m-1
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    Jinjun Bai, Meilan Ge, Haiying Xing, Xiaodong Sun, Junfa Zhao, Shengjiang Chang. Broadband Terahertz Metamaterial Absorber Based on Double Composite Structure Layers[J]. Chinese Journal of Lasers, 2019, 46(6): 0614034

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    Paper Information

    Category: terahertz technology

    Received: Nov. 20, 2018

    Accepted: Feb. 19, 2019

    Published Online: Jun. 14, 2019

    The Author Email: Bai Jinjun (jinjunbai@163.com)

    DOI:10.3788/CJL201946.0614034

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology