Using tunable inter-resonator coupling to reshape the mid-infrared absorption spectrum of graphene-based metamaterials
We explore the use of tunable inter-resonator coupling to reshape the spectral absorptivity of a graphene-based metamaterial. The metamaterial comprises of a periodic array of coupled metal-insulator-metal resonators, with two resonators per unit cell. One resonator supports a bright mode, and the o...
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| Published in: | Optics continuum Vol. 1; no. 5; p. 1027 |
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| Main Authors: | , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
15-05-2022
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| Online Access: | Get full text |
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| Summary: | We explore the use of tunable inter-resonator coupling to reshape the spectral absorptivity of a graphene-based metamaterial. The metamaterial comprises of a periodic array of coupled metal-insulator-metal resonators, with two resonators per unit cell. One resonator supports a bright mode, and the other a dark mode. We use coupled-mode theory to show that, by tuning the resonant wavelength of the bright mode through the dark mode, the spectrum can be reconfigured from a single-peak shape to a split-peak shape. We then propose specific, realistic device geometries to allow realization of this concept. |
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| ISSN: | 2770-0208 2770-0208 |
| DOI: | 10.1364/OPTCON.454402 |