Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/146752
Title: Lattice-enhanced Fano resonances from bound states in the continuum metasurfaces
Authors: Tan, Thomas CaiWei
Plum, Eric
Singh, Ranjan
Keywords: Science::Physics::Optics and light
Issue Date: 2020
Source: Tan, T. C., Plum, E., & Singh, R. (2020). Lattice-enhanced Fano resonances from bound states in the continuum metasurfaces. Advanced Optical Materials, 8(6), 1901572-. doi:10.1002/adom.201901572
Project: MOE2016-T3-1-006
MOE2017-T2-1-110
EP/M009122/1
Journal: Advanced Optical Materials
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, and nonlinear 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. Here, a strategy for simultaneously enhancing the Q factor and FoM of Fano resonances in terahertz metamaterials is reported. 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.
URI: https://hdl.handle.net/10356/146752
ISSN: 2195-1071
DOI: 10.1002/adom.201901572
DOI (Related Dataset): 10.21979/N9/5IFNOU
Rights: This is the peer reviewed version of the following article: Tan, T. C., Plum, E., & Singh, R. (2020). Lattice-enhanced Fano resonances from bound states in the continuum metasurfaces. Advanced Optical Materials, 8(6), 1901572-. doi:10.1002/adom.201901572, which has been published in final form at https://doi.org/10.1002/adom.201901572. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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