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FDTD subcell graphene model beyond the thin-film approximation

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Abstract

A subcell technique for calculation of optical properties of graphene with the finite-difference time-domain (FDTD) method is presented. The technique takes into account the surface conductivity of graphene which allows the correct calculation of its dispersive response for arbitrarily polarized incident waves interacting with the graphene. The developed technique is verified for a planar graphene sheet configuration against the exact analytical solution. Based on the same test case scenario, we also show that the subcell technique demonstrates a superior accuracy and numerical efficiency with respect to the widely used thin-film FDTD approach for modeling graphene. We further apply our technique to the simulations of a graphene metamaterial containing periodically spaced graphene strips (graphene strip-grating) and demonstrate good agreement with the available theoretical results.

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Authors and Affiliations

  1. HiperCone Ltd., Lugovaya St. 4, Skolkovo IC, Moscow, Russia, 143026

    Ilya Valuev & Sergei Belousov

  2. Joint Institute for High Temperatures of the Russian Academy of Sciences (JIHT), Izhorskaya St. 13, Bd.2, Moscow, Russia, 125412

    Ilya Valuev

  3. Kintech Lab Ltd, 3rd Khoroshevskaya St. 12, Moscow, Russia, 123298

    Sergei Belousov & Maria Bogdanova

  4. National Research Center ‘Kurchatov Institute’, Akademika Kurchatova Sq., 1, Moscow, Russia, 123182

    Sergei Belousov

  5. Institute of Spectroscopy of the Russian Academy of Sciences (ISAN), Fizicheskaya Str., 5, Troitsk, Moscow, Russia, 108840

    Oleg Kotov & Yurii Lozovik

  6. Dukhov Research Institute of Automatics (VNIIA), Sushchevskaya St., 22, Moscow, Russia, 127055

    Oleg Kotov & Yurii Lozovik

Authors
  1. Ilya Valuev
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  2. Sergei Belousov
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  3. Maria Bogdanova
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  4. Oleg Kotov
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  5. Yurii Lozovik
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Correspondence to Sergei Belousov.

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Valuev, I., Belousov, S., Bogdanova, M. et al. FDTD subcell graphene model beyond the thin-film approximation. Appl. Phys. A 123, 60 (2017). https://doi.org/10.1007/s00339-016-0635-1

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  • DOI: https://doi.org/10.1007/s00339-016-0635-1

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