Influence of oxidizing treatments on the photorefractive properties of ferroelectric lead germanate crystals

Autor(en): Hu, Y
Kip, D
Mendricks, S
Yue, XF
Kratzig, E
Stichwörter: BATIO3; lead germanate; Materials Science; Materials Science, Multidisciplinary; nonlinear optics; PB5GE3O11; photorefractive properties; Physics; Physics, Condensed Matter; TRANSPORT
Erscheinungsdatum: 2001
Herausgeber: TAYLOR & FRANCIS LTD
Journal: FERROELECTRICS
Volumen: 256
Startseite: 81
Seitenende: 89
Zusammenfassung: 
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.
ISSN: 00150193
DOI: 10.1080/00150190108015975

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