Beam coupling in reduced KNbO3 crystals

Authors
Radoua, A Khatib, D Amrhein, P
Citation
A. Radoua et al., Beam coupling in reduced KNbO3 crystals, FERROELEC L, 26(3-4), 1999, pp. 83-89
Citations number
16
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
FERROELECTRICS LETTERS SECTION
ISSN journal
07315171 → ACNP
Volume
26
Issue
3-4
Year of publication
1999
Pages
83 - 89
Database
ISI
SICI code
0731-5171(1999)26:3-4<83:BCIRKC>2.0.ZU;2-7
Abstract
Photorefractive two beam coupling gain and phase shift between light and re fractive index of reduced potassium niobate are calculated as a function of many physics parameters, in terms of one center charge transport model. It is found that the application of an electric field influences the charge t ransport and leads to an increased space charge field. Therefore, leads to a considerable coupling gain.