2019/04/30 by Anton S. Kupriianov, Yi Xu, Andrey Sayanskiy +3 · 1 citation
Engineering · Materials Science · Physics and Astronomy · #Acoustic Wave Phenomena Research #Bound state #Dielectric #Fano resonance #Metamaterial #Metamaterials and Metasurfaces Applications #Nanolithography #Photonic crystal #Photonics #Plasmonic and Surface Plasmon Research #Symmetry (geometry) #physics.optics
paper · pdf · doi:10.1103/physrevapplied.12.014024
published as Phys. Rev. Applied 12, 014024 (2019) · 8 pages, 5 figures
openalex created_date 2019/04/25 · arxiv created 2019/06/14 · openalex publication_date 2019/07/12 · arxiv updated 2019/07/17 · openalex updated_date 2026/08/05
Optical systems provide a versatile platform for realizing different types of bound states in the continuum (BICs), thanks to advanced nanofabrication for photonic structures on demand. Optical BICs exhibit ultrahigh-Q resonances, which can enhance light-matter interaction by orders of magnitude. Forming BICs in photonic crystals and metamaterials is usually associated with in-plane symmetry breaking, but here the authors break the o\phantom\rule00exu\phantom\rule00ext\ensuremath-o\phantom\rule00exf\ensuremath-p\phantom\rule00exl\phantom\rule00exa\phantom\rule00exn\phantom\rule00exe symmetry in a dielectric metasurface's unit cell to control Fano resonances originating from quasi-BICs. This idea is found to be general, and confirmed experimentally for lattices of particle clusters of different symmetries.