Influence of oxidizing treatments on the photorefractive properties of ferroelectric lead germanate crystals
Publication date
2001
Document type
Research article
Author
Organisational unit
Universität Osnabrück
Scopus ID
Series or journal
Ferroelectrics
Periodical volume
256
Periodical issue
1
First page
81
Last page
89
Part of the university bibliography
Nein
Abstract
The influence of oxidizing treatments on the photorefractive properties of nominally pure ferroelectric lead germanate crystals is investigated. In two-wave mixing experiments the dark conductivity, the intensity dependence of the photoconductivity, the effective charge density and the factors that reduce the space-charge field are determined. Oxidizing treatments increase the photoconductivity and the effective charge density, but decrease the electron-hole-competition factor. The experimental results can be explained in terms of a one-center model with electron-hole competition. © 2001 OPA (Overseas Publishers Association) N.V.
Version
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