Photorefractive Self-Focusing of Continuous and Pulsed Light: Experiment, Theory, Simulation

Delphine Wolfersberger (1) , Nicolas Fressengeas (1) , Jean Maufoy (1) , Godefroy Kugel (1)

1 LMOPS - Laboratoire Matériaux Optiques, Photonique et Systèmes

This paper presents a temporal investigation of the propagation of a single laser beam in a photorefractive medium, both in the continuous and pulsed regimes. A time resolved observation of one beam self-focusing in electrically biased Bi 12 TiO 20 (BTO) is reported for the two time scales. To interpret these experimental results, two (1+1) dimensional theoretical models of the propagation of one laser beam in a photorefractive crystal have been developed, numerically simulated using a BPM calculation and successfully compared to our experimental observations.

Mots clés: Self-focusing; Photorefractive Effect; Temporal Behaviour

Domaines: Optique [physics.optics]

Delphine Wolfersberger, Nicolas Fressengeas, Jean Maufoy, Godefroy Kugel. Photorefractive Self-Focusing of Continuous and Pulsed Light: Experiment, Theory, Simulation. Tenth International Meeting on Ferroelectricity (IMF-10), Sep 2001, Madrid, Spain. pp.341-346, ⟨10.1080/00150190211036⟩. ⟨hal-00256714⟩