Optically tunable Fano-resonant filter based on graphene

Alexander N. Grebenchukov; Anton D. Zaitsev; Mikhail G. Novoselov; Egor V. Kornilov; Mikhail K. Khodzitsky

doi:10.1117/12.2277542

24 August 2017 Optically tunable Fano-resonant filter based on graphene

Alexander N. Grebenchukov, Anton D. Zaitsev, Mikhail G. Novoselov, Egor V. Kornilov, Mikhail K. Khodzitsky

Proceedings Volume 10343, Metamaterials, Metadevices, and Metasystems 2017; 103432V (2017) https://doi.org/10.1117/12.2277542
Event: SPIE Nanoscience + Engineering, 2017, San Diego, California, United States

Abstract

We propose a high-Q optically tunable terahertz (THz) filter consisting of subwavelength multilayer graphene/ dielectric/metal asymmetric square split-ring resonators (SRR) within a unit cell. The obtained simulation results demonstrate that Fano resonance can be efficiently modulated under IR-radiation of different intensity value. The modulation depth of Fano resonance can achieve about 60% under the maximum considered pumping intensity (corresponding to 0.4 eV of Fermi energy) with the Q-factor of about 135. The proposed metasurface provides narrow filtering of incident light as well as sensing applications.

Citation Download Citation

Alexander N. Grebenchukov, Anton D. Zaitsev, Mikhail G. Novoselov, Egor V. Kornilov, and Mikhail K. Khodzitsky "Optically tunable Fano-resonant filter based on graphene", Proc. SPIE 10343, Metamaterials, Metadevices, and Metasystems 2017, 103432V (24 August 2017); https://doi.org/10.1117/12.2277542

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