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Chinese Journal of Lasers, Volume. 48, Issue 19, 1918006(2021)

Nonlinear Modulation of Electromagnetically Induced Transparency Based on Graphene-Metal Hybrid Metamaterial Structure

Shanshan Liu1, Quan Li1、*, Ziyu Yang1, Guangda Lu2, and Shuang Wang1
Author Affiliations
  • 1School of Electronic Engineering, Tianjin University of Technology and Education, Tianjin 300222, China
  • 2Tianjin Key Laboratory of Information Sensing and Intelligent Control, Tianjin University of Technology and Education, Tianjin 300222, China
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    AbstractGet PDF(in Chinese)
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    Schematic of unit cell of graphene-metal hybrid EIT metamaterial

    Fig. 1. Schematic of unit cell of graphene-metal hybrid EIT metamaterial

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    Simulated results without graphene. Simulated amplitude transmission spectra of (a) MLR, (b) SRRs, and (c) EIT structures; simulated surface current distributions of (d)MLR, (e)SRRs, and (f) EIT structures at frequencies of resonance dips (or transparent peak) near 0.54 THz

    Fig. 2. Simulated results without graphene. Simulated amplitude transmission spectra of (a) MLR, (b) SRRs, and (c) EIT structures; simulated surface current distributions of (d)MLR, (e)SRRs, and (f) EIT structures at frequencies of resonance dips (or transparent peak) near 0.54 THz

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    Transmission spectra of graphene-metal hybrid EIT metamaterial structure when EF=0.15 eV and g=0.5 μm. (a1)-(a6) Simulated transmission spectra; (b1)-(b6) corresponding theoretical fitting results

    Fig. 3. Transmission spectra of graphene-metal hybrid EIT metamaterial structure when EF=0.15 eV and g=0.5 μm. (a1)-(a6) Simulated transmission spectra; (b1)-(b6) corresponding theoretical fitting results

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    Simulated surface current distributions of hybrid EIT structure under different conditions when g=0.5 μm. (a) Without graphene; (b)-(f) different graphene scattering time

    Fig. 4. Simulated surface current distributions of hybrid EIT structure under different conditions when g=0.5 μm. (a) Without graphene; (b)-(f) different graphene scattering time

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    Fitting parameters versus graphene scattering time

    Fig. 5. Fitting parameters versus graphene scattering time

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    Simulated results of hybrid EIT metamaterial structure under different g. (a) Transmission spectra when EF=0.15 eV and τ=1 fs; (b) transmission spectra when EF=0.15 eV and τ=13 fs; (c) field enhancement factors at gap and modulation depths at transmission peak

    Fig. 6. Simulated results of hybrid EIT metamaterial structure under different g. (a) Transmission spectra when EF=0.15 eV and τ=1 fs; (b) transmission spectra when EF=0.15 eV and τ=13 fs; (c) field enhancement factors at gap and modulation depths at transmission peak

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    Shanshan Liu, Quan Li, Ziyu Yang, Guangda Lu, Shuang Wang. Nonlinear Modulation of Electromagnetically Induced Transparency Based on Graphene-Metal Hybrid Metamaterial Structure[J]. Chinese Journal of Lasers, 2021, 48(19): 1918006

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    Paper Information

    Received: Jun. 16, 2021

    Accepted: Aug. 3, 2021

    Published Online: Sep. 14, 2021

    The Author Email: Li Quan (quanli@tute.edu.cn)

    DOI:10.3788/CJL202148.1918006

    Topics

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