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arXiv · 1809.00330

Asymmetric metasurfaces with high-$Q$ resonances governed by bound states in the continuum

Kirill Koshelev·Sergey Lepeshov·Mingkai Liu·Andrey Bogdanov·Yuri Kivshar
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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 that originate from the physics of bound states in the continuum. We prove rigorously a direct link between the bound states in the continuum and the Fano resonances, and develop a general theory of such metasurfaces, suggesting the way for smart engineering of resonances for many applications in nanophotonics and meta-optics.

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Kirill Koshelev, Sergey Lepeshov, Mingkai Liu, Andrey Bogdanov, Yuri Kivshar. 2018-09-02. Asymmetric metasurfaces with high-$Q$ resonances governed by bound states in the continuum. https://doi.org/10.1103/physrevlett.121.193903

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