| Original Articles |
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Effect of Strontium Ion on the Growth and Second-Harmonic
Generation Properties of GdCa4O(BO3)3Crystal |
| ZHANG Shu-Jun;CHENG Zhen-Xiang;LIU Jun-Hai;HAN Jian-Ru;
WANG Ji-Yang;SHAO Zong-Shu;CHEN Huan-Chu |
| State Key Laboratory of Crystal Materials, Shandong University, Ji’nan 250100 |
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| Cite this article: |
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ZHANG Shu-Jun, CHENG Zhen-Xiang, LIU Jun-Hai et al 2001 Chin. Phys. Lett. 18 63-64 |
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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 1.04W 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.
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| Keywords:
42.65.Ky
78.20.-e
78.55.Hx
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Published: 01 January 2001
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| PACS: |
42.65.Ky
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(Frequency conversion; harmonic generation, including higher-order harmonic generation)
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78.20.-e
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(Optical properties of bulk materials and thin films)
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78.55.Hx
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(Other solid inorganic materials)
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