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
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
17 February 2003
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), .
(doi:10.1063/1.1543644).
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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Published date: 17 February 2003
Keywords:
Nanoparticles, Optical properties, Structural transitions
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Local EPrints ID: 28698
URI: http://eprints.soton.ac.uk/id/eprint/28698
ISSN: 0003-6951
PURE UUID: d0cce03e-0e16-4ffb-a848-44f7c53003af
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Date deposited: 05 May 2006
Last modified: 16 Mar 2024 03:10
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Author:
V. A. Fedotov
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