A systematic approach to diffusion recording in photorefractive sillenite crystals

Citation
Y. Hu et al., A systematic approach to diffusion recording in photorefractive sillenite crystals, OPT MATER, 18(1), 2001, pp. 139-142
Citations number
1
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
OPTICAL MATERIALS
ISSN journal
0925-3467 → ACNP
Volume
18
Issue
1
Year of publication
2001
Pages
139 - 142
Database
ISI
SICI code
0925-3467(200110)18:1<139:ASATDR>2.0.ZU;2-V
Abstract
We present a new method to solve the coupled equations for two-wave mixing (TWM) in sillenites. The first-order solutions, based on the approximation of a weak grating and strong optical activity, can describe BSO crystals we ll. The result is generally valid and the maximum gain for arbitrary cut is shown, The fundamental properties of TWM are systematized for the practica lly relevant cut (1 1 1). For the optimization of BTO crystals, characteriz ed by not very large optical activity, dynamic gratings are taken into acco unt. We find an approximation scheme, related to the parallel subsystem, wh ich works for quite large coupling coefficients and for a wide range of cry stal thicknesses. (C) 2001 Elsevier Science B.V. All rights reserved.