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报道了880nm LD抽运下,YVO4-Nd:YVO4键合晶体1342nm激光输出特性。880 nm LD抽运下,YVO4-Nd:YVO4键合晶体在抽运光功率为18.74W时获得了8.87W的激光输出,光-光转换效率为47.3%,斜效率为52.1%。并与相同实验条件下880 nm LD抽运Nd:YVO4单一晶体1 342 nm激光器、808nm LD抽运YVO4-Nd:YVO4键合晶体1342nm激光器、808nm LD抽运Nd:YVO4单一晶体1 342 nm激光器的实验结果进行了比较。利用有限元分析方法,数值模拟了以上几种情况下晶体内的温度分布,晶体内的温度梯度较小时,得到的激光器斜效率较高。
The 1342 nm laser output characteristics of YVO4-Nd: YVO4 bonded crystals under 880 nm LD pumping are reported. Under 880 nm LD pumping, the output of the YVO4-Nd: YVO4 crystal was 8.87W at a pump power of 18.74W, the light-to-light conversion efficiency was 47.3% and the ramp efficiency was 52.1%. Under the same experimental conditions, an Nd: YVO4 single-crystal 1 342 nm laser with 880 nm LD pumped, a 1342 nm LD with 808 nm LD pumped YVO4-Nd: YVO4 crystal and a 1 342 nm Nd: YVO4 single crystal with 808 nm LD pumped The experimental results were compared. The finite element method is used to numerically simulate the temperature distribution in the above cases. When the temperature gradient in the crystal is small, the slope efficiency of the laser is high.