Tunable Polarization-Induced Fano Resonances in Stacked Wire-Grid Metasurfaces

Romain, Xavier and Degl'Innocenti, Riccardo and Baida, F.I. and Boyer, Philippe (2021) Tunable Polarization-Induced Fano Resonances in Stacked Wire-Grid Metasurfaces. Communications Physics. ISSN 2399-3650 (In Press)

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Abstract

Stacked metasurfaces are being investigated in light of exploring exotic optical effects that cannot be achieved with single-layered metasurfaces. In this article, we theoretically demonstrate that metallic wire-grid metasurfaces with specific polarization properties have the ability to induce tunable Fano resonances when they are stacked. The developed original model - combining a circulating field approach together with an extended Jones formalism - reveals the underlying principle that gives rise to the polarization-induced Fano resonances. The theoretical frame is validated in an experimental proof of concept using commercially available wire-grids and a terahertz time domain spectrometer. This unexplored possibility opens an alternative path to the realization and control of Fano resonances by using stacked metallic metasurfaces. Furthermore, these findings suggest that the polarization can be used as an additional degree of freedom for the design of optical resonators with enhanced and tunable properties.

Item Type:
Journal Article
Journal or Publication Title:
Communications Physics
ID Code:
153985
Deposited By:
Deposited On:
19 Apr 2021 15:45
Refereed?:
Yes
Published?:
In Press
Last Modified:
25 Jul 2021 05:26