Effect of strontium ion on the growth and second-harmonic generation properties of GdCa4O(BO3)3 crystal

Shu Jun Zhang, Zhen Xiang Cheng, Jun Hai Liu, Jian Ru Han, Ji Yang Wang, Zong Shu Shao, Huan Chu Chen

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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 1.04 W when the laser diode pump power is 10 W 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.

Original languageEnglish (US)
Pages (from-to)63-64
Number of pages2
JournalChinese Physics Letters
Volume18
Issue number1
DOIs
StatePublished - Jan 1 2001

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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