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Strong coupling of light to flat metals via a buried nanovoid lattice: the interplay of localized and free plasmons

Teperik, Tatiana V., Popov, Vyacheslav V., García de Abajo, F. Javier, Abdelsalam, Mamdouh, Bartlett, Philip N., Kelf, Tim A., Suguwara, Yoshihiro and Baumberg, Jeremy J. (2006) Strong coupling of light to flat metals via a buried nanovoid lattice: the interplay of localized and free plasmons Optics Express, 14, (5), pp. 1965-1972.

Record type: Article

Abstract

We study the optical plasmonic properties of metal surfaces which have a periodic lattice of voids buried immediately beneath their flat upper surface. Light reflection spectra calculated in the framework of a selfconsistent electromagnetic multiple-scattering layer-KKR approach exhibit two types of plasmon resonances originating from the excitation of different plasmon modes: surface plasmon-polaritons propagating on the planar surface of metal and Mie plasmons localized in the buried voids. Coupling between these two types of plasma oscillation leads to an enhancement of the surface plasmon-polariton resonances even for close-packed void lattices. Our theoretical model quantitatively agrees with experimental results, demonstrating that planar surfaces can exhibit strong plasmonic field enhancements.

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Published date: 2006
Keywords: surface plasmons, microstructure fabrication, mie theory, multiple scattering, metals, gratings

Identifiers

Local EPrints ID: 21023
URI: http://eprints.soton.ac.uk/id/eprint/21023
ISSN: 1094-4087
PURE UUID: edf367ad-246c-4b16-a15d-72a0b031f7b6
ORCID for Philip N. Bartlett: ORCID iD orcid.org/0000-0002-7300-6900

Catalogue record

Date deposited: 09 Mar 2006
Last modified: 17 Jul 2017 16:27

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Contributors

Author: Tatiana V. Teperik
Author: Vyacheslav V. Popov
Author: F. Javier García de Abajo
Author: Mamdouh Abdelsalam
Author: Tim A. Kelf
Author: Yoshihiro Suguwara
Author: Jeremy J. Baumberg

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