Replication Data for: Lattice enhanced Fano resonances from bound states in the continuum metasurfaces

(2020) Replication Data for: Lattice enhanced Fano resonances from bound states in the continuum metasurfaces. Nanyang Technological University doi:10.21979/n9/5ifnou [Dataset]

Record type: Dataset

Abstract

Fano resonances in metamaterials are known for their high quality (Q) factor and high sensitivity to external perturbations, which makes them attractive for sensors, lasers, non-linear and slow light devices. However, Fano resonances with higher Q factors obtained through structural optimization of individual resonators are accompanied by lower resonance intensity, thereby limiting the overall figure of merit (FoM) of the resonance. This article reports a strategy for simultaneously enhancing the Q factor and FoM of Fano resonances in terahertz metamaterials. Coupling of the Fano resonance, which arises from a symmetry protected bound state in continuum, to the first order lattice mode of the metamaterial array leads to stronger field confinement and substantial enhancement of both Q factor and FoM. As such enhancement occurs in planar metamaterials independently of the resonator geometry, the proposed approach can be utilized for a wide range of high-Q and high-sensitivity terahertz metadevices.

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