Abstract： Large sized and optical quality GdCa4O(BO3)3(GdCOB) crystal with calcium partially substituted by strontium (Sr) ions was grown for the first time. The x-ray powder diffraction shows that the Sr ion has an effect on the cell parameters of the GdCOB crystal. Second-harmonic generation (SHG) experiments were performed on the Sr:GdCOB and GdCOB crystals along the spatial phase-matching direction. The results show that the cw green laser output power is 1.04W when the laser diode pump power is 10W in the Nd:YVO4/Sr:GdCOB intracavity laser. Considering the slope efficiency of Nd:YVO4 and the fundamental laser in cavity, the intracavity SHG conversion efficiency of the GdCOB crystal is 21% while it is 24% for the Sr:GdCOB crystal, the SHG conversion efficiency is improved by 14%. The effect of the Sr ions on the nonlinearity of the GdCOB crystal is also discussed by using the anion group theory.
ZHANG Shu-Jun;CHENG Zhen-Xiang;LIU Jun-Hai;HAN Jian-Ru;
WANG Ji-Yang;SHAO Zong-Shu;CHEN Huan-Chu. Effect of Strontium Ion on the Growth and Second-Harmonic
Generation Properties of GdCa4O(BO3)3Crystal[J]. 中国物理快报, 2001, 18(1): 63-64.
ZHANG Shu-Jun, CHENG Zhen-Xiang, LIU Jun-Hai, HAN Jian-Ru,
WANG Ji-Yang, SHAO Zong-Shu, CHEN Huan-Chu. Effect of Strontium Ion on the Growth and Second-Harmonic
Generation Properties of GdCa4O(BO3)3Crystal. Chin. Phys. Lett., 2001, 18(1): 63-64.
2001, Vol. 18 
