Bianisotropy for light trapping in all-dielectric metasurfaces

authored by: Andrey B. Evlyukhin, Vladimir R. Tuz, Valentyn S. Volkov, Boris N. Chichkov
Abstract: Magnetoelectric dipole coupling effects in all-dielectric metasurfaces composed of particles with bianisotropic electromagnetic response are investigated. This bianisotropic response is associated with the trapped mode excitation. Maintaining the trapped mode resonant conditions allows one to sufficiently increase the quality factor and reduce radiation losses in all-dielectric nanostructures (metasurfaces). An analytical model accounting for the contributions of both electric and magnetic dipole moments induced in particles by external electromagnetic fields is proposed. We show how bianisotropy can lead to the excitation of the trapped mode in metasurfaces. This mode corresponds to the electromagnetic coupling between the out-of-plane particle dipole moments, which do not radiate collectively from the metasurface plane resulting in the enhanced storage of electromagnetic energy. Our approach reveals a physical mechanism of the trapped mode excitation and demonstrates that the specially initiated bianisotropy of particles enables the energy flow between external electromagnetic waves and the trapped mode. Due to this bianisotropy, one can control the process of light-matter interaction and energy storage in all-dielectric metasurfaces via excitation of trapped modes.
Organisation(s): Institute of Quantum Optics
QuantumFrontiers
PhoenixD: Photonics, Optics, and Engineering - Innovation Across Disciplines
External Organisation(s): Jilin University
Moscow Institute of Physics and Technology
Lebedev Physical Institute of the Russian Academy of Sciences (LPI RAS)
Type: Article
Journal: Physical Review B
Volume: 101
ISSN: 2469-9950
Publication date: 13.05.2020
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Electronic, Optical and Magnetic Materials, Condensed Matter Physics
Electronic version(s): https://doi.org/10.1103/PhysRevB.101.205415 (Access: Closed)

BibTeX

@article{dd73ba5b587946d9b415d72375fdb3c0,
title = "Bianisotropy for light trapping in all-dielectric metasurfaces",
abstract = "Magnetoelectric dipole coupling effects in all-dielectric metasurfaces composed of particles with bianisotropic electromagnetic response are investigated. This bianisotropic response is associated with the trapped mode excitation. Maintaining the trapped mode resonant conditions allows one to sufficiently increase the quality factor and reduce radiation losses in all-dielectric nanostructures (metasurfaces). An analytical model accounting for the contributions of both electric and magnetic dipole moments induced in particles by external electromagnetic fields is proposed. We show how bianisotropy can lead to the excitation of the trapped mode in metasurfaces. This mode corresponds to the electromagnetic coupling between the out-of-plane particle dipole moments, which do not radiate collectively from the metasurface plane resulting in the enhanced storage of electromagnetic energy. Our approach reveals a physical mechanism of the trapped mode excitation and demonstrates that the specially initiated bianisotropy of particles enables the energy flow between external electromagnetic waves and the trapped mode. Due to this bianisotropy, one can control the process of light-matter interaction and energy storage in all-dielectric metasurfaces via excitation of trapped modes.",
author = "Evlyukhin, {Andrey B.} and Tuz, {Vladimir R.} and Volkov, {Valentyn S.} and Chichkov, {Boris N.}",
note = "Funding information: A.B.E. and B.N.C. acknowledge financial support from the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany's Excellence Strategy within the Cluster of Excellence PhoenixD (EXC 2122, Project ID 390833453) and the Cluster of Excellence QuantumFrontiers (EXC 2123, Project ID 390837967). The analysis of the bianisotropic coupling effects has been supported by the Russian Science Foundation Grant No. 20-12-00343. V.R.T. acknowledges financial support from the National Key R&D Program of China Project No. 2018YFE0119900.",
year = "2020",
month = may,
day = "13",
doi = "10.1103/PhysRevB.101.205415",
language = "English",
volume = "101",
journal = "Physical Review B",
issn = "2469-9950",
publisher = "American Institute of Physics",
number = "20",
}