Light-induced structural transformations and optical nonlinearity in gallium nano-films and self-assembled nanoparticles


MacDonald, K.F., Fedotov, V.A., Stevens, G.C., Pochon, S., Emel'yanov, V.I., Brocklesby, W.S. and Zheludev, N.I. (2001) Light-induced structural transformations and optical nonlinearity in gallium nano-films and self-assembled nanoparticles. In, ICONO 2001: XVII International Conference on Coherent and Nonlinear Optics, Minsk, BY, 26 Jun - 01 Jul 2001.

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Description/Abstract

We report observation of an optical nonlinearity in gallium nano-particles resulting from a light-induced structural transfomlation in the metal which is known for its incredible polymorphism. A freshly cleaved single-mode optical fiber was put into a vacuum chamber and cooled to 100 K. The end of the fiber was exposed to a beam of gallium atoms, leading to the steady deposition of a gallium layer, thus forming a mirror made of just a few picograms of material. The gallium forms nano-particles by self-organization. These particles are relatively uniform in size, with a diameter typically between 80 and 200 nm, which depends on the thickness of the gallium film from which they formed

Item Type: Conference or Workshop Item (Paper)
Additional Information: Invited paper
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Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: University Structure - Pre August 2011 > School of Electronics and Computer Science
University Structure - Pre August 2011 > Optoelectronics Research Centre
ePrint ID: 78938
Date Deposited: 11 Mar 2010
Last Modified: 27 Mar 2014 19:00
URI: http://eprints.soton.ac.uk/id/eprint/78938

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