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Opt Express. 2009 Nov 23;17(24):22209-16. doi: 10.1364/OE.17.022209.

Pyroliton: pyroelectric spatial soliton.

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  • 1Département d'Optique, Institut FEMTO-ST, UMR CNRS 6174, Université de Franche-Comté, Besançon, France.

Abstract

The concept of optical beam self-trapping in pyroelectric photorefractive medium is presented. We show that the temperature controlled spontaneous polarisation of ferroelectric crystals produces an optical nonlinearity that can lead to formation of 2-D spatial soliton named pyroliton. Experimental demonstrations performed in lithium niobate crystals illustrate that efficient self-trapping occurs either for ordinary or extraordinary polarisation under moderate temperature increase. For instance, a 15 microm diameter pyroliton can be formed with a 10 degree temperature raise.

PMID:
19997467
[PubMed]
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