Direct near-field mapping of nano-sphere-excited leaky surface modes atanisotropic metasurface: Paper

Research output: Research - peer-reviewConference article – Annual report year: 2018

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  • Author: Walla, Frederik

    Johann Wolfgang Goethe-Universität Frankfurt, Germany

  • Author: Bürkle, Florian

    Johann Wolfgang Goethe-Universität Frankfurt, Germany

  • Author: Sinev, I. S.

    St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO), Russian Federation

  • Author: Bogdanov, Andrey

    St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO), Russian Federation

  • Author: Komissarenko, Filipp E.

    St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO), Russian Federation

  • Author: Soltani, Alinaghi

    Johann Wolfgang Goethe-Universität Frankfurt, Germany

  • Author: Malureanu, Radu

    Metamaterials, Department of Photonics Engineering, Technical University of Denmark, Ørsteds Plads, 2800, Kgs. Lyngby, Denmark

  • Author: Lavrinenko, A.V.

    Metamaterials, Department of Photonics Engineering, Technical University of Denmark, Ørsteds Plads, 2800, Kgs. Lyngby, Denmark

  • Author: Roskos, Hartmut G.

    Johann Wolfgang Goethe-Universität Frankfurt, Germany

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Leaky surface modes on an ultra-thin anisotropic gold metasurface are directly observed through scattering-type scanning near-field optical microscopy (s-SNOM). Surface modes are excited by focussing light onto a resonant silicon nano-sphere positioned on the surface by nano-manipulation under electron-beammonitoring. The light scattered from the nano-sphere is ableto excitesurface modes with a broad range of wavevectors. The asymmetric air-metasurface-insulator structure supports a leaky surface mode which is confined at the top interface and leaks into the higher-index substrate. s-SNOM near-field mapping of the leaky surface wave is in good agreement with the results of the full-wave simulationsof the electro-magnetic modes on the structure.
Original languageEnglish
Article number012165
Book seriesJournal of Physics: Conference Series
Volume1092
Issue number1
Number of pages3
ISSN1742-6596
DOIs
StatePublished - 2018
CitationsWeb of Science® Times Cited: No match on DOI
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