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

F. Walla; F. Bürkle; I. Sinev; Andrey Bogdanov; F. Komissarenko; Alinaghi Soltani; Radu Malureanu; A.V. Lavrinenko; H. G. Roskos

doi:10.1088/1742-6596/1092/1/012165

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

F. Walla, F. Bürkle, I. Sinev, Andrey Bogdanov, F. Komissarenko, Alinaghi Soltani, Radu Malureanu, A.V. Lavrinenko, H. G. Roskos

Research output: Contribution to journal › Conference article › Research › peer-review

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Abstract

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 language	English
Article number	012165
Book series	Journal of Physics: Conference Series
Volume	1092
Issue number	1
Number of pages	3
ISSN	1742-6596
DOIs	https://doi.org/10.1088/1742-6596/1092/1/012165
Publication status	Published - 2018

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Walla, F., Bürkle, F., Sinev, I., Bogdanov, A., Komissarenko, F., Soltani, A., Malureanu, R., Lavrinenko, A. V., & Roskos, H. G. (2018). Direct near-field mapping of nano-sphere-excited leaky surface modes atanisotropic metasurface: Paper. Journal of Physics: Conference Series, 1092(1), [012165]. https://doi.org/10.1088/1742-6596/1092/1/012165

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abstract = " 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. ",

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Direct near-field mapping of nano-sphere-excited leaky surface modes atanisotropic metasurface : Paper. / Walla, F.; Bürkle, F.; Sinev, I.; Bogdanov, Andrey; Komissarenko, F.; Soltani, Alinaghi; Malureanu, Radu ; Lavrinenko, A.V.; Roskos, H. G.

In: Journal of Physics: Conference Series, Vol. 1092, No. 1, 012165, 2018.

Research output: Contribution to journal › Conference article › Research › peer-review

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AU - Walla, F.

AU - Bürkle, F.

AU - Sinev, I.

AU - Bogdanov, Andrey

AU - Komissarenko, F.

AU - Soltani, Alinaghi

AU - Malureanu, Radu

AU - Lavrinenko, A.V.

AU - Roskos, H. G.

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N2 - 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.

AB - 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.

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DO - 10.1088/1742-6596/1092/1/012165

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JO - Journal of Physics: Conference Series (Online)

JF - Journal of Physics: Conference Series (Online)

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