ANISOTROPY OF STEADY-STATE 2-DIMENSIONAL LENSES IN PHOTOREFRACTIVE CRYSTALS WITH DRIFT NONLINEARITY

Authors
KORNEEV N AGUILAR PAM MONDRAGON JJS STEPANOV S KLEIN M WECHSLER B
Citation
N. Korneev et al., ANISOTROPY OF STEADY-STATE 2-DIMENSIONAL LENSES IN PHOTOREFRACTIVE CRYSTALS WITH DRIFT NONLINEARITY, J. mod. opt., 43(2), 1996, pp. 311-321
Citations number
12
Categorie Soggetti
Optics
Journal title
J. mod. opt. → ACNP
ISSN journal
09500340
Volume
43
Issue
2
Year of publication
1996
Pages
311 - 321
Database
ISI
SICI code
0950-0340(1996)43:2<311:AOS2LI>2.0.ZU;2-7
Abstract
As a result of the original theoretical analysis in different approxim ations we show that the steady-state photoinduced photorefractive lens formed under an external transverse d.c. electric field by the light beam with cylindrical symmetry is essentially astigmatic. This behavio ur is demonstrated in self-focusing-defocusing experiments with cubic Bi12TiO20 photorefractive crystals at lambda = 633 nm. The result impl ies in particular that the steady-state (2+1)-dimensional spatial soli tons generated in photorefractive crystals under similar conditions ar e to be characterized by an elliptic cross-section.