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Proceedings Paper

The analysis of the threshold of concentration of damage-resistant ions by OH- absorption spectra
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Paper Abstract

The infrared spectra of congruent LiNbO3:Fe:M (M= Mg2+, Zn2+, In3+, [Li]/[Nb]=0.946) crystals with 0.03wt% Fe2O3 were measured by a FT-IR spectrometer from 3400cm-1 to 3580cm-1. The spectra show that OH- absorption band of double-doped LiNbO3:Fe:M crystal locates at about 3482 cm-1 as that of single-doped LiNbO3:Fe crystals, and it is not shifted to ultraviolet band until the concentrations of M exceeds its concentration threshold. The threshold of damage-resistant ions M is 6mol% Zn2+, 4mol% Mg2+ and 3mol% In3+, respectively. The OH- absorption band of M-doped (>concentration threshold) LiNbO3:Fe crystals shifted to 3535, 3525 and 3508 cm-1, which results from the OH- stretching vibration in [MNb]a--OH--[MLi]b+ complexes. The influence of valence on the concentrate threshold is also discussed.

Paper Details

Date Published: 28 January 2005
PDF: 5 pages
Proc. SPIE 5646, Nonlinear Optical Phenomena and Applications, (28 January 2005); doi: 10.1117/12.574413
Show Author Affiliations
Qingxin Meng, Harbin Institute of Technology (China)
Suhua Luo, Harbin Institute of Technology (China)
Xiudong Sun, Harbin Institute of Technology (China)


Published in SPIE Proceedings Vol. 5646:
Nonlinear Optical Phenomena and Applications
Qihuang Gong; Yiping Cui; Roger A. Lessard, Editor(s)

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