Abstract
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. (© 2005 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
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