Strong coupling of light to flat metals via a buried nanovoid lattice: the interplay of localized and free plasmons
Strong coupling of light to flat metals via a buried nanovoid lattice: the interplay of localized and free plasmons
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.
surface plasmons, microstructure fabrication, mie theory, multiple scattering, metals, gratings
1965-1972
Teperik, Tatiana V.
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Popov, Vyacheslav V.
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García de Abajo, F. Javier
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Abdelsalam, Mamdouh
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Bartlett, Philip N.
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Kelf, Tim A.
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Suguwara, Yoshihiro
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Baumberg, Jeremy J.
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6 March 2006
Teperik, Tatiana V.
95bc6ea9-5503-4068-a2fc-0167cc5669c5
Popov, Vyacheslav V.
73697d50-19c3-4666-a062-6a98613a93c7
García de Abajo, F. Javier
c306107b-8ee2-46ac-9401-ea8c42121063
Abdelsalam, Mamdouh
d1cbddcb-9f5c-46d5-b774-1bbaee26e115
Bartlett, Philip N.
d99446db-a59d-4f89-96eb-f64b5d8bb075
Kelf, Tim A.
d7c554df-a0e6-41b4-95ef-e9f0a9726a67
Suguwara, Yoshihiro
d725446d-17f9-4451-8c05-7a06c0debab4
Baumberg, Jeremy J.
9eb85b3d-107f-466d-ac6e-2cfd03c9229a
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), .
(doi:10.1364/OE.14.001965).
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: 6 March 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
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Date deposited: 09 Mar 2006
Last modified: 16 Mar 2024 02:42
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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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