✦ LIBER ✦

Structure and optical properties of near stoichiometric Ce:LiNbO3 crystals

✍ Scribed by Yexia Fan; Hongtao Li; Liangcheng Zhao

Publisher: John Wiley and Sons
Year: 2007
Tongue: English
Weight: 182 KB
Volume: 42
Category: Article
ISSN: 0232-1300
DOI: 10.1002/crat.200610854

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✦ Synopsis

The near sotichiometric Ce:LiNbO 3 (Ce:SLN) crystals were grown by the top seeded solution growth (TSSG) method by adding K 2 O flux to Li 2 O-Nb 2 O 5 melt. Their UV-vis absorption spectra and IR spectra were measured and discussed to investigate their defect structure. The results showed that the grown crystals were near stoichiometric and Ce ions in the crystals located the Li site. Photorefractive properties of Ce:SLN crystals were studied by two-wave coupling experiment. The results of the two-wave coupling experiments of the crystals showed that as the CeO 2 doping concentrations increased, the diffraction efficiency increased, photoconductivity decreased and the writing time and erasure time increased.

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