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Proceedings Paper

Theoretical investigation of the time behavior of self-focused light pulses propagating in biased photorefractive media and experimental evidence on Bi12TiO20
Author(s): Delphine Wolfersberger; Nicolas Fressengeas; Jean Maufoy; Godefroy Kugel
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Paper Abstract

This 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 respect to 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, to show the effect of the external applied electric field, the intensity of the laser pulse and the beam waist.

Paper Details

Date Published: 9 October 1998
PDF: 8 pages
Proc. SPIE 3470, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications IV, (9 October 1998); doi: 10.1117/12.326847
Show Author Affiliations
Delphine Wolfersberger, Univ. de Metz and Supelec (France)
Nicolas Fressengeas, Univ. de Metz and Supelec (France)
Jean Maufoy, Supelec (France)
Godefroy Kugel, Univ. de Metz and Supelec (France)


Published in SPIE Proceedings Vol. 3470:
Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications IV
Francis T. S. Yu; Shizhuo Yin, Editor(s)

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