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Nanoscale light-induced phase transformation in alpha-gallium as the source of a broadband optical nonlinearity

Nanoscale light-induced phase transformation in alpha-gallium as the source of a broadband optical nonlinearity
Nanoscale light-induced phase transformation in alpha-gallium as the source of a broadband optical nonlinearity
Summary form only given. Using a tunable optical parametric oscillator we discovered that the interface between gallium and silica displays an exceptionally broadband nonlinearity. At temperatures several degrees below gallium's melting point (~30°C) the reflectivity increases by up to 40% in response to 3 ns excitation pulses at wavelengths from 440 to 700 nm. It is shown how the reflectivity change depends on the excitation fluence, and that it saturates at about 6 mJ/cm.
1-55752-662-1
MacDonald, K.F.
76c84116-aad1-4973-b917-7ca63935dba5
Fedotov, V.A.
3725f5cc-2d0b-4e61-95c5-26d187c84f25
Zheludev, N.I.
32fb6af7-97e4-4d11-bca6-805745e40cc6
Zhdanov, B.V.
3e0025a8-432b-431b-98cd-f0354a12984f
Knize, R.J.
c23e88fc-4d0f-4a57-a439-d79722d89146
MacDonald, K.F.
76c84116-aad1-4973-b917-7ca63935dba5
Fedotov, V.A.
3725f5cc-2d0b-4e61-95c5-26d187c84f25
Zheludev, N.I.
32fb6af7-97e4-4d11-bca6-805745e40cc6
Zhdanov, B.V.
3e0025a8-432b-431b-98cd-f0354a12984f
Knize, R.J.
c23e88fc-4d0f-4a57-a439-d79722d89146

MacDonald, K.F., Fedotov, V.A., Zheludev, N.I., Zhdanov, B.V. and Knize, R.J. (2001) Nanoscale light-induced phase transformation in alpha-gallium as the source of a broadband optical nonlinearity. Conference on Lasers and Electro-Optics '01, United States. 06 - 11 May 2001. (doi:10.1109/CLEO.2001.947720).

Record type: Conference or Workshop Item (Paper)

Abstract

Summary form only given. Using a tunable optical parametric oscillator we discovered that the interface between gallium and silica displays an exceptionally broadband nonlinearity. At temperatures several degrees below gallium's melting point (~30°C) the reflectivity increases by up to 40% in response to 3 ns excitation pulses at wavelengths from 440 to 700 nm. It is shown how the reflectivity change depends on the excitation fluence, and that it saturates at about 6 mJ/cm.

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e-pub ahead of print date: 2001
Venue - Dates: Conference on Lasers and Electro-Optics '01, United States, 2001-05-06 - 2001-05-11

Identifiers

Local EPrints ID: 70926
URI: https://eprints.soton.ac.uk/id/eprint/70926
ISBN: 1-55752-662-1
PURE UUID: 4db76a5b-f731-4d49-94d3-cfd2a0a3b4ce
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

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Date deposited: 11 Dec 2009
Last modified: 20 Jul 2019 01:22

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Contributors

Author: K.F. MacDonald ORCID iD
Author: V.A. Fedotov
Author: N.I. Zheludev ORCID iD
Author: B.V. Zhdanov
Author: R.J. Knize

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