High intensity behavior of pyroelectric photorefractive self-focusing in LiNbO3Reportar como inadecuado




High intensity behavior of pyroelectric photorefractive self-focusing in LiNbO3 - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

1 ULB - Service OPERA - Photonique - Université Libre de Bruxelles - Service OPERA Photonique 2 FEMTO-ST - Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies

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.





Autor: Jassem Safioui - Fabrice Devaux - Kien Phan Huy - Mathieu Chauvet -

Fuente: https://hal.archives-ouvertes.fr/



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