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Giant nonlinearity and reflectivity hysteresis in metallic gallium at melting

Giant nonlinearity and reflectivity hysteresis in metallic gallium at melting
Giant nonlinearity and reflectivity hysteresis in metallic gallium at melting
Cubic optical nonlinearities of metals have recently attracted attention when a sharp increase in the nonlinearity of up to 10-8 to 10-7 esu was seen at the melting point of indium. Here we report on the first experimental observation of an even bigger nonlinearity of the reflection hysteresis from metallic gallium undergoing phase transitions from the solid to molten stage and back to solid. We found that the hysteresis loop can be considerably modified by a pump beam of intensity ~10-50 kWcm-2 corresponding to Im{χ(3)/n} ≈ 0.01 esu.

223-224
Institute of Electrical and Electronics Engineers
Dhanjal, S.
a3f4fa8d-654f-4162-bd38-67c9b2d2f136
Shatwell, I.R.
d94ecb47-9f9f-411c-a0a8-1828c6be3e5d
Zheludev, N.I.
32fb6af7-97e4-4d11-bca6-805745e40cc6
Dhanjal, S.
a3f4fa8d-654f-4162-bd38-67c9b2d2f136
Shatwell, I.R.
d94ecb47-9f9f-411c-a0a8-1828c6be3e5d
Zheludev, N.I.
32fb6af7-97e4-4d11-bca6-805745e40cc6

Dhanjal, S., Shatwell, I.R. and Zheludev, N.I. (1997) Giant nonlinearity and reflectivity hysteresis in metallic gallium at melting. In Proceedings of Conference on Lasers and Electro-Optics (CLEO 97). Institute of Electrical and Electronics Engineers. pp. 223-224 .

Record type: Conference or Workshop Item (Paper)

Abstract

Cubic optical nonlinearities of metals have recently attracted attention when a sharp increase in the nonlinearity of up to 10-8 to 10-7 esu was seen at the melting point of indium. Here we report on the first experimental observation of an even bigger nonlinearity of the reflection hysteresis from metallic gallium undergoing phase transitions from the solid to molten stage and back to solid. We found that the hysteresis loop can be considerably modified by a pump beam of intensity ~10-50 kWcm-2 corresponding to Im{χ(3)/n} ≈ 0.01 esu.

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More information

Published date: 1997
Venue - Dates: Conference on Lasers and Electro-Optics (CLEO '97), , Baltimore, United States, 1997-05-17 - 1997-05-22
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 76595
URI: http://eprints.soton.ac.uk/id/eprint/76595
PURE UUID: fc0a4a18-8b23-4d73-a4ab-2e7b2b4f1821
ORCID for N.I. Zheludev: ORCID iD orcid.org/0000-0002-1013-6636

Catalogue record

Date deposited: 11 Mar 2010
Last modified: 27 Jul 2021 01:33

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