M. H. Li, Y. H. Xu, R. Wang, X. H. Zhen, C. Z. Zhao: Second Harmonic Generation in Zn-doped Li-rich LiNbO<SUB>3</SUB> Crystals

Crystal Research and Technology

Cryst. Res. Technol. 36 (2001) 191 - Abstract -

M. H. Li, Y. H. Xu, R. Wang, X. H. Zhen, C. Z. Zhao*

Department of Applied Chemistry, Harbin Institute of Technology, Harbin, P. R. China
*Department of Physics, Harbin Normal University, Harbin, P. R. China

Second Harmonic Generation in Zn-doped Li-rich LiNbO₃ Crystals

6.0 mol. % ZnO doped LiNbO₃ crystals were grown by Czochralski technique. Various Li/Nb mole ratios of 0.942, 0.970, 1.000, and 1.020 were used to prepare the starting materials. Second harmonic generation (SHG) experimental results show that the phase matching temperature increases near linearly with the increasing of Li/Nb ratio, and the SHG efficiency is enhanced by the Zn doping and the increasing of Li/Nb ratio. The intrinsic and extrinsic defects are discussed in this paper to explain the SHG behavior and photo-damage resistance in the Zn doped Li-rich LiNbO₃ crystals.

Keywords: Li-rich, lithium niobate; Zn doping; second harmonic generation; photo-damage

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