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Asymmetric Metasurfaces with High- Q Resonances Governed by Bound States in the Continuum

Koshelev, Kirill; Lepeshov, Sergey I; Liu, Mingkai; Bogdanov, Andrey; Kivshar, Yuri


Wereveal that metasurfacescreated by seemingly different lattices of (dielectricor metallic) meta-atoms with broken in-plane symmetry can support sharp high-Q resonances arising from a distortion of symmetry-protected bound states in the continuum. We develop a rigorous theory of such asymmetric periodicstructures anddemonstratealinkbetween thebound statesinthecontinuum andFanoresonances. Our results suggest the way for smart engineering of resonances in metasurfaces for many applications in...[Show more]

CollectionsANU Research Publications
Date published: 2018
Type: Journal article
Source: Physical Review Letters
DOI: 10.1103/PhysRevLett.121.193903
Access Rights: Open Access


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