Increased optical damage resistance of Zr:LiNbO3 crystals by Liang Sun, Fengyun Guo, Qiang Lv, Haitao Yu, Hongtao Li, Wei Cai, Yuheng Xu, and Liancheng Zhao

Crystal Research and Technology

Cryst. Res. Technol. 42, 1117 (2007) - Abstract -

Increased optical damage resistance of Zr:LiNbO₃ crystals

Liang Sun, Fengyun Guo, Qiang Lv, Haitao Yu**, Hongtao Li, Wei Cai, Yuheng Xu*, and Liancheng Zhao

School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001, P. R. China
*Department of the applied chemistry, Harbin Institute of Technology, Harbin, 150001, P. R. China
**School of applied science, Harbin University of Science and Technology, Harbin, 150080, P. R. China

Keywords	Czochralski methold, lithium compound, photo-refracitve materials
PACS	42.70.Mp, 78.30.-j, 78.20.Ci
DOI	10.1002/crat.200710935

Zr: LiNbO₃ crystals has been grown. The crystal composition and phase are analyzed by X-ray diffration. The optical damage resistance ability of Zr: LiNbO₃ crystals is studied by the Sénarmont compensation method and the transmitted beam pattern distortion method. The saturated value of the birefringence change of 6 mol % Zr: LiNbO₃ crystal is 1.01x10^-4, which is seven times smaller than that of congruent pure LiNbO₃ crystal. The results of UV-Visible and IR absorption spectra of Zr: LiNbO₃ crystals powerfully confirm that the optical damage resistance threshold concentration of the Zr⁴⁺ ions doped in LiNbO₃ crystals is about 6 mol % in the melt.

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