OperaV1, Hal, Checkpoint, bibRecord, 000187

High intensity behavior of pyroelectric photorefractive self-focusing in LiNbO3

Identifieur interne : 000187 ( Hal/Checkpoint ); précédent : 000186; suivant : 000188

High intensity behavior of pyroelectric photorefractive self-focusing in LiNbO3

Auteurs : Jassem Safioui [Belgique, France] ; Fabrice Devaux [France] ; Kien Phan Huy [France] ; Mathieu Chauvet [France]

Source :

Optics Communications [ 0030-4018 ] ; 2013.

RBID : Hal:hal-00878963

Abstract

The formation of self-confined beams using pyroelectric effect is numerically and experimentally studied in photorefractive LiNbO3. For a given crystal temperature change, the trapped beam width is shown to be less efficient as intensity is increased. Numerical calculations reveal that the induced refractive-index profile varies along propagation for large intensities due to a nonlinear photovoltaic effect. Moreover, it eventually gives beam splitting for intensities greater than a threshold intensity that depends on LiNbO3 composition.

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Le document en format XML

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<front><div type="abstract" xml:lang="en">The formation of self-confined beams using pyroelectric effect is numerically and experimentally studied in photorefractive LiNbO3. For a given crystal temperature change, the trapped beam width is shown to be less efficient as intensity is increased. Numerical calculations reveal that the induced refractive-index profile varies along propagation for large intensities due to a nonlinear photovoltaic effect. Moreover, it eventually gives beam splitting for intensities greater than a threshold intensity that depends on LiNbO3 composition.</div>
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<abstract xml:lang="en">The formation of self-confined beams using pyroelectric effect is numerically and experimentally studied in photorefractive LiNbO3. For a given crystal temperature change, the trapped beam width is shown to be less efficient as intensity is increased. Numerical calculations reveal that the induced refractive-index profile varies along propagation for large intensities due to a nonlinear photovoltaic effect. Moreover, it eventually gives beam splitting for intensities greater than a threshold intensity that depends on LiNbO3 composition.</abstract>
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High intensity behavior of pyroelectric photorefractive self-focusing in LiNbO3

High intensity behavior of pyroelectric photorefractive self-focusing in LiNbO3

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