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M. CHAUVET1,* , J. SAFIOUI1, F. DEVAUX1
Affiliation
- Département d'Optique, Institut FEMTO-ST, UMR CNRS 6174, Université de Franche-Comté, 25030 Besançon, France
Abstract
Optical beam self-trapping induced by pyroelectric effect is demonstrated in a photorefractive medium. A 10 degree temperature raise of a lithium niobate crystal is shown to be sufficient to self-trap a 15µm diameter beam at 532nm. The phenomenon is explained by the local screening of the internal pyroelectric field produced by the spontaneous polarisation change. Such an optical nonlinearity can lead to the formation of 2-D spatial pyroelectric solitons. Experimental demonstrations are confirmed by numerical calculations..
Keywords
Photorefractive effect, Self-trapping, Spatial soliton, Pyroelectric effect.
Submitted at: Dec. 15, 2009
Accepted at: Jan. 20, 2010
Citation
M. CHAUVET, J. SAFIOUI, F. DEVAUX, Beam self-trapping by pyroelectric effect, Journal of Optoelectronics and Advanced Materials Vol. 12, Iss. 1, pp. 52-56 (2010)
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