INFLUENCE OF ZINC DOPING ON THE PHOTOREFRACTIVE PROPERTIES OF LITHIUM-NIOBATE

Autor(en): SIMON, M
JERMANN, F
VOLK, TR
KRATZIG, E
Stichwörter: CHARGE-TRANSPORT; INTENSITY; LINBO3; Materials Science; Materials Science, Multidisciplinary; Physics; Physics, Applied; Physics, Condensed Matter
Erscheinungsdatum: 1995
Herausgeber: WILEY-V C H VERLAG GMBH
Journal: PHYSICA STATUS SOLIDI A-APPLIED RESEARCH
Volumen: 149
Ausgabe: 2
Startseite: 723
Seitenende: 732
Zusammenfassung: 
The photorefractive properties of lithium niobate crystals containing zinc dopants as well as iron ions are studied to obtain quantitative information on the influence of Zn. Elementary holographic gratings are recorded and erased using light intensities from 10(2) to about 10(11) W/m(2). The experiments indicate that nonlinear contributions to the bulk photovoltaic effect and to the photoconductivity as well as light-induced absorption changes at high intensities can be diminished by Zn doping. Additionally, Zn dopants considerably increase the photoconductivity and thus reduce light-induced refractive index changes. Results are discussed using a two-center charge transport model recently proposed to describe the photorefractive properties of LiNbO3:Fe at high light intensities.
ISSN: 00318965
DOI: 10.1002/pssa.2211490223

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