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Investigation on photorefractive properties of doped lithium niobate
Author(s) -
Li H. T.,
Fan Y. X.,
Guo F. Y.,
Zhang S. H.,
Zhao L. C.
Publication year - 2007
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.200710945
Subject(s) - lithium niobate , photorefractive effect , doping , crystal (programming language) , materials science , lithium (medication) , ion , potassium niobate , diffraction , coupling (piping) , analytical chemistry (journal) , optics , mineralogy , chemistry , ferroelectricity , optoelectronics , dielectric , composite material , medicine , physics , organic chemistry , chromatography , computer science , programming language , endocrinology
Cu:LiNbO 3 crystal and Fe:Cu:LiNbO 3 crystals were grown by the Czochralski method from congruent melt. The OH ‐ absorption spectrum of doped lithium niobate crystals was measured. The photorefractive properties of doped crystals were studied by the two‐wave coupling method. The results of the two‐wave coupling experiments showed that as the concentration of doping ions increased, the diffraction efficiency and the dynamic range enhanced, the holographic response time shortened. The recording time of Fe(0.10wt%): Cu(0.10wt%): LiNbO 3 crystal is only a tenth of that of Cu(0.05wt%): LiNbO 3 crystal. Among all samples, the dynamic range of the Fe(0.10wt%): Cu(0.10wt%): LiNbO 3 crystal was the most largest (up to 40.78). (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)