One-dimensional self-focusing in photorefractive Bi12SiO20 crystal: theoretical modeling and experimental demonstration

Authors
Tsai, J Chiou, A Hsieh, TC Hsu, K
Citation
J. Tsai et al., One-dimensional self-focusing in photorefractive Bi12SiO20 crystal: theoretical modeling and experimental demonstration, OPT COMMUN, 162(4-6), 1999, pp. 237-240
Citations number
8
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Optics & Acoustics
Journal title
OPTICS COMMUNICATIONS
ISSN journal
00304018 → ACNP
Volume
162
Issue
4-6
Year of publication
1999
Pages
237 - 240
Database
ISI
SICI code
0030-4018(19990415)162:4-6<237:OSIPBC>2.0.ZU;2-8
Abstract
We have experimentally demonstrated one-dimensional self-focusing of a lase r beam in a photorefractive Bi12SiO20 (BSO) crystal with an externally appl ied DC field. Fractional change in focal length larger than 50% was measure d when the biased field was varied from 2 kV/cm to 8 kV/cm. Based on the ba nd transport model, thin crystal approximation, and gradient index (GRIN) l ens approximation, we derive a mathematical expression that describes the e ffect quantitatively. (C) 1999 Elsevier Science B.V. All rights reserved.