Share Email Print
cover

Proceedings Paper

Beam self-trapping in a BCT crystal
Author(s): V. Matusevich; A. Kiessling; R. Kowarschik; A. E. Zagorskiy; V. V. Shepelevich
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

We present some aspects of wave self-focusing and self-defocusing in a photorefractive Ba0.77Ca0.23TiO3 (BCT) crystal without external electric field and without background illumination. The effects depend on the cross-section of the input beam. We show that by decreasing of the diameter of the input beam from 730 μm the fanning effect disappears at 150 μm. A symmetrical self-focusing is observed for input diameters from 150 um down to 40 μm and a symmetrical self-defocusing for input diameters from 40 μm down to 20 μm. The 1D self-trapping is detected at 65 μm in BCT. Light power and wavelength are correspondingly 3 mW and 633 nm. The experimental results are supplemented with numerical calculations based on both photovoltaic model and model of screening soliton.

Paper Details

Date Published: 20 January 2006
PDF: 10 pages
Proc. SPIE 6027, ICO20: Optical Information Processing, 60270D (20 January 2006); doi: 10.1117/12.667744
Show Author Affiliations
V. Matusevich, Friedrich-Schiller-Univ. Jena (Germany)
A. Kiessling, Friedrich-Schiller-Univ. Jena (Germany)
R. Kowarschik, Friedrich-Schiller-Univ. Jena (Germany)
A. E. Zagorskiy, Mozyr State Pedagogical Univ. (Belarus)
V. V. Shepelevich, Mozyr State Pedagogical Univ. (Belarus)


Published in SPIE Proceedings Vol. 6027:
ICO20: Optical Information Processing
Yunlong Sheng; Songlin Zhuang; Yimo Zhang, Editor(s)

© SPIE. Terms of Use
Back to Top