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

2018/09/02 by Kirill Koshelev, Sergey Lepeshov, Mingkai Liu +2 · 5 citations
Physics and Astronomy · #physics.optics #cond-mat.mes-hall

paper · pdf · doi:10.1103/physrevlett.121.193903

published as Phys. Rev. Lett. 121, 193903 (2018) · 6 pages, 4 figures, Supplementary Information

arxiv created 2018/09/02 · arxiv updated 2018/11/14

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.

Cited by

• Optical Resonances: From Eigenmodes to Scattering Features
• Polarization-Multiplexed Spatial Differentiation and Filtering Driven by van der Waals Birefringence
• The continuous spectrum of bound states in expulsive potentials: self-trapping in the linear system
• Self-Decelerating Bright Exciton-Polariton Solitons in Bound-State-in-Continuum Microcavities
• Spatially-Controlled Planar Guided Crystallization of Low-Loss Phase Change Materials for Programmable Photonics

Related

• Meta-optics and bound states in the continuum
• From local to nonlocal high-Q plasmonic metasurfaces
• Collective nature of high-Q resonances in finite-size photonic metastructures
• Tailoring accidental double bound states in the continuum in all-dielectric metasurfaces
• Anisotropic metallic metasurface superlattices supporting Fano resonances and bound states in the continuum