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Self-focusing and soliton propagation of light pulses in photorefractive media

Abstract : The paper presents a theoretical and experimental investigation of the self-focusing of a laser pulse in a photorefractive medium on a nanosecond time-scale. For times shorter than the dielectric recombination time, we analyze the space-charge field build-up with time and space and provide strong hints on the short time self-focusing of a narrow powerful beam. In order to validate our theoretical and numerical analysis, systematic investigations were performed on a Bi12TiO20 crystal, which show that under the influence of an applied electric field, a beam can be self-focused in a very short time.
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https://hal-supelec.archives-ouvertes.fr/hal-00256694
Contributor : Sébastien van Luchene <>
Submitted on : Saturday, February 16, 2008 - 5:25:42 PM
Last modification on : Wednesday, April 8, 2020 - 3:16:59 PM

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Delphine Wolfersberger, Nicolas Fressengeas, Jean Maufoy, Godefroy Kugel. Self-focusing and soliton propagation of light pulses in photorefractive media. 1998 International Conference on Applications of Photonic Technology III: Closing the Gap between Theory, Development, and Applications, Jul 1998, Ottawa, Canada. pp.720-725, ⟨10.1117/12.328615⟩. ⟨hal-00256694⟩

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