Open AccessStable self-focused beams in a photorefractive Bi_12TiO_20 crystal
Author(s) -
E. Weidner,
A. Kießling,
R. Kowarschik
Publication year - 2004
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/opex.12.004993
Subject(s) - photorefractive effect , optics , electric field , light beam , laser beams , polarization (electrochemistry) , materials science , organic photorefractive materials , beam (structure) , light intensity , self focusing , laser , circular polarization , optoelectronics , physics , chemistry , quantum mechanics , microstrip
We present experimental results on the self-focusing of light beams in a photorefractive, optically active Bi12TiO20 crystal. Using circular polarization of the input HeNe laser beam we succeeded to create a stable self-focused, asymmetric light-beam over several hours. Depending on external parameters, like the external electric field and the intensity ratio, a transient symmetric state is observed.