Home | About Journal | Web Links | E-mail Alerts | RSS RSS Icon | Browse
Previous Article Next Article

Two-photoactive-center model applied to photorefractive self-focusing in biased LiNbO3

Source: Phys. Rev. A 81, 013825 (2010); doi:10.1103/PhysRevA.81.013825

Published 26 January 2010

PACS
  • 42.65.Hw
    Phase conjugation; photorefractive and Kerr effects
  • 42.65.Jx
    Beam trapping, optical self-focusing and defocusing
  • 42.65.Tg
    Optical solitons; nonlinear guided waves
  • 72.20.Jv
    Charge carriers: generation, recombination, lifetime, and trapping (semiconductors/insulators)
  • YEAR: 2010
PUBLICATION DATA
ISSN:
1553-9601 (online)
Publisher:
AIP is a member of CrossRef APS
Fabrice Devaux, Jassem Safioui, Mathieu Chauvet, and Rémy Passier
Département d'Optique P.M. Duffieux, Institut FEMTO-ST, UMR CNRS 6174, Université de Franche-Comté, F-25030 Besançon Cedex, France
We propose a time-dependent, three-dimensional numerical model where iron impurities and polarons are both considered photoactive centers to explain beam self-trapping in biased lithium niobate crystal. It shows that the intensity-dependent behavior reported experimentally is due to the competition between the drift current and the nonlinear photovoltaic current. For low light intensity, beam self-focusing occurs, while beam-splitting is observed at a higher intensity level. ©2010 The American Physical Society
History: Received 26 August 2009; published 26 January 2010
Permalink: http://link.aps.org/abstract/PRA/v81/e013825
ADVERTISEMENT