Physical Review Letters· 2018Q1
Asymmetric Metasurfaces with High-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>Q</mml:mi></mml:math> Resonances Governed by Bound States in the Continuum
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- Q1SCImago
- 2018year
Short summary
Metasurfaces with broken in-plane symmetry support sharp, high-Q resonances derived from distorted bound states in the continuum (BICs).
AI-generated from the title and abstract; the full text is not read.
Key points
- Asymmetric metasurfaces with broken in-plane symmetry support high-Q resonances.
- These resonances arise from distorted, symmetry-protected bound states in the continuum (BICs).
- A theoretical framework links BICs to Fano resonances in these structures.
- The findings enable engineered resonances for nanophotonics and metaoptics applications.
AI-generated from the title and abstract; the full text is not read.
Abstract
We reveal that metasurfaces created by seemingly different lattices of (dielectric or 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 periodic structures and demonstrate a link between the bound states in the continuum and Fano resonances. Our results suggest the way for smart engineering of resonances in metasurfaces for many applications in nanophotonics and metaoptics.
The authors' abstract, as published at the source. Physical Review Letters, 2018 · DOI ↗
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Field: Electronic, Optical and Magnetic Materials
Electronic, Optical and Magnetic MaterialsMaterials Science