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ECOLE SUPÉRIEURE D'ÉLECTRICITÉ Une grande école d'ingénieurs au cœur des sciences de l'information,de l'énergie et des systèmes |
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Conference papers
Theoretical investigation of the time behavior of self-focused light pulses propagating in biased photorefractive media and experimental evidence on Bi12TiO20
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.
https://hal-supelec.archives-ouvertes.fr/hal-00256686
Contributor : Sébastien van Luchene Connect in order to contact the contributor
Submitted on : Saturday, February 16, 2008 - 4:50:48 PM
Last modification on : Saturday, October 16, 2021 - 11:24:02 AM
Contributor : Sébastien van Luchene Connect in order to contact the contributor
Submitted on : Saturday, February 16, 2008 - 4:50:48 PM
Last modification on : Saturday, October 16, 2021 - 11:24:02 AM