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Polarization Insensitive and Broadband Terahertz Absorber Using Graphene Disks

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Abstract

We demonstrate design and characterization of a polarization-independent ultra-broadband absorber of light consisting of periodic array of graphene disks on top of a lossless quarter-wavelength dielectric spacer placed on a metallic reflector. The absorber is duly designed based on impedance matching concept by proposing a fully analytical circuit model resulting in a normalized bandwidth of 100 % in the terahertz regime.

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Authors and Affiliations

  1. Department of Electrical Engineering, Sharif University of Technology, P.O. Box 11555-4363, Tehran, Iran

    Kamalodin Arik, Sajjad AbdollahRamezani & Amin Khavasi

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  1. Kamalodin Arik
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  2. Sajjad AbdollahRamezani
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  3. Amin Khavasi
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Correspondence to Amin Khavasi.

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Arik, K., AbdollahRamezani, S. & Khavasi, A. Polarization Insensitive and Broadband Terahertz Absorber Using Graphene Disks. Plasmonics 12, 393–398 (2017). https://doi.org/10.1007/s11468-016-0276-4

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  • DOI: https://doi.org/10.1007/s11468-016-0276-4

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