OH - absorption spectra in doped lithium niobate crystals

Highly In-doped and Na-doped lithium niobate crystals have been grown for the first time. The infrared spectra show that the OH - absorption bands of LiNbO 3:In (1–3 mol.%) and LiNbO 3:Na (1–3 mol.%) locate at about 3484 cm -1 as in pure LiNbO 3, while that of LiNbO 3:In (5 mol.%) shifts to 3508 cm...

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Bibliographic Details
Published inPhysics letters. A Vol. 196; no. 1; pp. 128 - 132
Main Authors Kong, Yongfa, Deng, Jiachun, Zhang, Wanlin, Wen, Jinke, Zhang, Guangyin, Wang, Huafu
Format Journal Article
LanguageEnglish
Published Elsevier B.V 19.12.1994
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Summary:Highly In-doped and Na-doped lithium niobate crystals have been grown for the first time. The infrared spectra show that the OH - absorption bands of LiNbO 3:In (1–3 mol.%) and LiNbO 3:Na (1–3 mol.%) locate at about 3484 cm -1 as in pure LiNbO 3, while that of LiNbO 3:In (5 mol.%) shifts to 3508 cm -1, and consists of three components. The 3508 cm -1 band, which appears when the dopant concentration of In is above its threshold, is supposed to be the OH - stretching vibration in OH --(In Nb) 2- complexes. The influence of the valence, electronegativity and radius of the doped ion on the OH - absorption spectrum was also discussed.
ISSN:0375-9601
1873-2429
DOI:10.1016/0375-9601(94)91057-X