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Near-Field Analysis of Bright and Dark Modes on Plasmonic Metasurfaces Showing Extraordinary Suppressed Transmission

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Plasmonic metasurfaces are investigated that consist of a sub-wavelength line pattern in an ultrathin (∼10 nm) silver fi lm, designed for extraordinary suppressed transmission (EOST) in the visible spectral range. Measurements
with a near-fi eld scanning optical microscope (NSOM) demonstrate that farfi eld irradiation resonantly excites antenna-like (bright) modes that are localized on the metal ridges. The re-radiation of these modes into the far-fi eld
interferes destructively with the transmitted wave, thus suppressing transmission almost completely. In contrast, a second type of mode, bound (dark) surface plasmon polaritons (SPPs) launched from an NSOM tip, propagates
well across the metasurface, preferentially perpendicular to the grating lines.

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Ketersediaan

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Informasi Detail

Judul Seri

Adv. Optical Mater

No. Panggil

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Penerbit

: WILEY-VCH Verlag GmbH & Co. KGaA., 2014

Deskripsi Fisik

Adv. Optical Mater. 2014, 2, 990–999

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

FISIKA

Info Detail Spesifik

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Pernyataan Tanggungjawab

Wati/Agus

Versi lain/terkait

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