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Optical nonlinearity resulting from a light-induced structural transition in gallium nanoparticles

Optical nonlinearity resulting from a light-induced structural transition in gallium nanoparticles
Optical nonlinearity resulting from a light-induced structural transition in gallium nanoparticles
We report that a light-induced structural transformation between different phases of gallium provides a mechanism for a strong optical nonlinearity. The nonlinearity has been studied in transient pump-probe experiments on nanoparticle films deposited on the ends of optical fibers. The magnitude and relaxation time of the response show hysteretic dependencies on temperature in the range from 100 to 300 K, are enhanced near the phase transition points and disappear at temperatures above 220 K.
Nanoparticles, Optical properties, Structural transitions
0003-6951
1087-1089
MacDonald, K. F.
76c84116-aad1-4973-b917-7ca63935dba5
Fedotov, V. A.
3725f5cc-2d0b-4e61-95c5-26d187c84f25
Zheludev, N. I.
32fb6af7-97e4-4d11-bca6-805745e40cc6
MacDonald, K. F.
76c84116-aad1-4973-b917-7ca63935dba5
Fedotov, V. A.
3725f5cc-2d0b-4e61-95c5-26d187c84f25
Zheludev, N. I.
32fb6af7-97e4-4d11-bca6-805745e40cc6

MacDonald, K. F., Fedotov, V. A. and Zheludev, N. I. (2003) Optical nonlinearity resulting from a light-induced structural transition in gallium nanoparticles. Applied Physics Letters, 82 (7), 1087-1089. (doi:10.1063/1.1543644).

Record type: Article

Abstract

We report that a light-induced structural transformation between different phases of gallium provides a mechanism for a strong optical nonlinearity. The nonlinearity has been studied in transient pump-probe experiments on nanoparticle films deposited on the ends of optical fibers. The magnitude and relaxation time of the response show hysteretic dependencies on temperature in the range from 100 to 300 K, are enhanced near the phase transition points and disappear at temperatures above 220 K.

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More information

Published date: 17 February 2003
Keywords: Nanoparticles, Optical properties, Structural transitions

Identifiers

Local EPrints ID: 28698
URI: https://eprints.soton.ac.uk/id/eprint/28698
ISSN: 0003-6951
PURE UUID: d0cce03e-0e16-4ffb-a848-44f7c53003af
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: 05 May 2006
Last modified: 03 Dec 2019 02:03

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Contributors

Author: K. F. MacDonald ORCID iD
Author: V. A. Fedotov
Author: N. I. Zheludev ORCID iD

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