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Active switching of surface plasmon polariton waves in Ga-Al and Ga-Ag layered nanostructures

Active switching of surface plasmon polariton waves in Ga-Al and Ga-Ag layered nanostructures
Active switching of surface plasmon polariton waves in Ga-Al and Ga-Ag layered nanostructures
We recently introduced and demonstrated a new concept for active switching of surface plasmon polariton (SPP) waves, which was based on the control of waveguide properties via reversible nanoscale structural transformations at the metal-dielectric interface [APL 84, 1416 (2004); 85, 3369 (2004)]. Our approach takes advantage of the most characteristic features of SPP waves, namely that their propagation depends strongly on the properties of a nanoscale layer of metal at the interface where SPP waves are localized. It has potential for application in Opto-SPP, Electro-SPP and SPP-SPP modulators and in SPP detectors.
So far, gallium films on silica have been the main focus of experimental studies, however manufacturing high-quality, uniform, switchable gallium films is difficult and presents a significant obstacle to their practical application. Here we report that gallium-aluminium (Ga-Al) and gallium-silver (Ga-Ag) films, manufactured by binary diffusion, simultaneously provide exceptionally good 'mirror-like' interface quality in large mono-domain areas and are switchable by temperature and optical excitation. We provide data on the optical properties of such films and on nanosecond optical switching of the dielectric properties of these structures in various configurations important for active plasmonics.
Krasavin, A.V.
2026f437-6d31-4ca1-a07f-52adc7aa24a4
MacDonald, K.F.
76c84116-aad1-4973-b917-7ca63935dba5
Zheludev, N.I.
32fb6af7-97e4-4d11-bca6-805745e40cc6
Krasavin, A.V.
2026f437-6d31-4ca1-a07f-52adc7aa24a4
MacDonald, K.F.
76c84116-aad1-4973-b917-7ca63935dba5
Zheludev, N.I.
32fb6af7-97e4-4d11-bca6-805745e40cc6

Krasavin, A.V., MacDonald, K.F. and Zheludev, N.I. (2005) Active switching of surface plasmon polariton waves in Ga-Al and Ga-Ag layered nanostructures. Surface Plasmon Photonics 2, Austria. 21 - 26 May 2005.

Record type: Conference or Workshop Item (Paper)

Abstract

We recently introduced and demonstrated a new concept for active switching of surface plasmon polariton (SPP) waves, which was based on the control of waveguide properties via reversible nanoscale structural transformations at the metal-dielectric interface [APL 84, 1416 (2004); 85, 3369 (2004)]. Our approach takes advantage of the most characteristic features of SPP waves, namely that their propagation depends strongly on the properties of a nanoscale layer of metal at the interface where SPP waves are localized. It has potential for application in Opto-SPP, Electro-SPP and SPP-SPP modulators and in SPP detectors.
So far, gallium films on silica have been the main focus of experimental studies, however manufacturing high-quality, uniform, switchable gallium films is difficult and presents a significant obstacle to their practical application. Here we report that gallium-aluminium (Ga-Al) and gallium-silver (Ga-Ag) films, manufactured by binary diffusion, simultaneously provide exceptionally good 'mirror-like' interface quality in large mono-domain areas and are switchable by temperature and optical excitation. We provide data on the optical properties of such films and on nanosecond optical switching of the dielectric properties of these structures in various configurations important for active plasmonics.

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More information

Published date: May 2005
Venue - Dates: Surface Plasmon Photonics 2, Austria, 2005-05-21 - 2005-05-26

Identifiers

Local EPrints ID: 71009
URI: https://eprints.soton.ac.uk/id/eprint/71009
PURE UUID: d0c34127-e295-4193-a8f2-97b89526fad3
ORCID for K.F. MacDonald: ORCID iD orcid.org/0000-0002-3877-2976
ORCID for N.I. Zheludev: ORCID iD orcid.org/0000-0002-1013-6636

Catalogue record

Date deposited: 11 Dec 2009
Last modified: 06 Jun 2018 13:09

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