Graphene-based metamaterial for on-demand spectral absorption shaping in the mid-infrared

Romil Audhkhasi; Mashnoon A. Sakib; Michelle L. Povinelli

doi:10.1117/12.2647423

17 March 2023 Graphene-based metamaterial for on-demand spectral absorption shaping in the mid-infrared

Romil Audhkhasi, Mashnoon A. Sakib, Michelle L. Povinelli

Proceedings Volume PC12423, 2D Photonic Materials and Devices VI; (2023) https://doi.org/10.1117/12.2647423
Event: SPIE OPTO, 2023, San Francisco, California, United States

Abstract

We propose a graphene-based metamaterial for achieving tunable spectral absorptivity in the infrared. The metamaterial is modeled as a periodic array of electrically-tunable, coupled resonators. The structural parameters of the resonators are chosen to implement a dark-bright mode coupling scheme in the context of temporal coupled-mode theory. The spectral response of the metamaterial can be tuned from single-peaked to double-peaked absorption by tuning the resonance wavelengths of the constituent resonators relative to each other. Our results thus suggest the possibility of achieving tunable multi-band absorption using metamaterials composed of multiple coupled resonators.

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Citation Download Citation

Romil Audhkhasi, Mashnoon A. Sakib, and Michelle L. Povinelli "Graphene-based metamaterial for on-demand spectral absorption shaping in the mid-infrared", Proc. SPIE PC12423, 2D Photonic Materials and Devices VI, (17 March 2023); https://doi.org/10.1117/12.2647423

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KEYWORDS

Metamaterials

Absorption

Resonators

Mid-IR

Modulation

Graphene

Infrared radiation

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