Growth and optical damage resistance of Sc, Er Co-doped LiNbO3 crystals by X. H. Zhen, Q. Li, H. T. Li, Y. H. Xu, and L. C. Zhao

Crystal Research and Technology

Cryst. Res. Technol. 40, 649 (2005) - Abstract -

Growth and optical damage resistance of Sc, Er Co-doped LiNbO₃ crystals

X. H. Zhen, Q. Li, H. T. Li*, Y. H. Xu**, and L. C. Zhao***

Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China
*Department of Physics, Harbin Normal University, Harbin, 150001, P. R. China
**Department of Applied Chemistry, Harbin Institute of Technology, Harbin, 150001, P. R. China
***School of Material Science and Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China

Keywords	optical damage resistance, defect structure, Sc:Er:LiNbO₃ crystal
PACS	42.55.Rz, 61.80.Ba, 71.35.Cc, 81.10.Fq
DOI	10.1002/crat.200410402

A series of Sc:Er:LiNbO₃ crystals have been grown by Czochralski method. Their ultraviolet-visible (UV-Vis) absorption spectra was measured and discussed to investigate their defect structure. The optical damage resistance of Sc:Er:LiNbO₃ crystals was characterized by the transmitted beam pattern distortion method. It increases remarkably when the concentration of Sc₂O₃ exceeds a threshold concentration. The optical damage resistance of Sc (3.0mol %):Er:LiNbO₃ is much higher than that of the Er:LiNbO₃. The intrinsic and extrinsic defects were discussed to explain the enhance of the optical damage resistance in the Sc:Er:LiNbO₃ crystals.

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