Enhanced Light Emission by Magnetic and Electric Resonances in Dielectric Metasurfaces

Shunsuke Murai (Corresponding author), Gabriel W. Castellanos, T. V. Raziman, Alberto G. Curto, Jaime Gómez Rivas (Corresponding author)

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58 Citations (Scopus)

Abstract

An enhanced emission of high quantum yield molecules coupled to dielectric metasurfaces formed by periodic arrays of polycrystalline silicon nanoparticles is demonstrated. Radiative coupling of the nanoparticles, mediated by in-plane diffraction, leads to the formation of collective Mie scattering resonances or Mie surface lattice resonances (M-SLRs), with remarkable narrow line widths. These narrow line widths and the intrinsic electric and magnetic dipole moments of the individual Si nanoparticles allow resolving electric and magnetic M-SLRs. Incidence angle- and polarization-dependent extinction measurements and high-accuracy surface integral simulations show unambiguously that magnetic M-SLRs arise from in- and out-of-plane magnetic dipoles, while electric M-SLRs are due to in-plane electric dipoles. Pronounced changes in the emission spectrum of the molecules are observed, with almost a 20-fold enhancement of the emission in defined directions of molecules coupled to electric M-SLRs, and a fivefold enhancement of the emission of molecules coupled to magnetic M-SLRs. These measurements demonstrate the potential of dielectric metasurfaces for emission control and enhancement, and open new opportunities to induce asymmetric scattering and emission using collective electric and magnetic resonances.

Original languageEnglish
Article number1902024
Number of pages8
JournalAdvanced Optical Materials
Volume8
Issue number16
Early online date18 May 2020
DOIs
Publication statusPublished - 1 Aug 2020

Funding

S.M. and G.W.C. contributed equally to this work. This work was partly supported by the Nanotechnology Hub, Kyoto University and Kitakyusyu FAIS in the “Nanotechnology Platform Project,” sponsored by Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan. The authors gratefully acknowledge the financial support from MEXT (17KK0133, 19H02434), Iketani Science and Technology Foundation, the Asahi Glass Foundation, Nanotech Career‐up Alliance (Nanotech CUPAL), and the Netherlands Organisation for Scientific Research (NWO) through Gravitation grant “Research Centre for Integrated Nanophotonics (no. 024.002.033)” and Innovational Research Activities Scheme (Vici project SCOPE no. 680‐47‐628). S.M. and G.W.C. contributed equally to this work. This work was partly supported by the Nanotechnology Hub, Kyoto University and Kitakyusyu FAIS in the “Nanotechnology Platform Project,” sponsored by Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan. The authors gratefully acknowledge the financial support from MEXT (17KK0133, 19H02434), Iketani Science and Technology Foundation, the Asahi Glass Foundation, Nanotech Career-up Alliance (Nanotech CUPAL), and the Netherlands Organisation for Scientific Research (NWO) through Gravitation grant “Research Centre for Integrated Nanophotonics (no. 024.002.033)” and Innovational Research Activities Scheme (Vici project SCOPE no. 680-47-628).

FundersFunder number
Nanotech Career‐up Alliance
Nanotech Career‐up Alliance
Asahi Glass Foundation
Ministry of Education, Culture, Sports, Science and Technology17KK0133, 19H02434
Nederlandse Organisatie voor Wetenschappelijk Onderzoek680‐47‐628, 024.002.033
Iketani Science and Technology Foundation

    Keywords

    • emission control
    • Mie resonances
    • silicon nanoparticles
    • surface lattice resonances

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