用重复频率1 Hz、脉冲宽度120 μs的闪光灯侧面抽运,在相同的实验条件下,对比了Nd:KGW晶体与Nd:YAG晶体的激光性能.在自由运转时,分别获得1.0%和0.44%的斜率效率和0.54 J、0.76 J的外推阈值能量,获得的最大输出能量为384 mJ和165 mJ.调Q运转时,Nd:KGW激光器与Nd:YAG激光器的斜率效率分别是0.16%和0.07%,阈值能量为5.9 J和12.5 J.

A comparative study of Nd∶KGW and Nd∶YAG laser crystals was conducted under the same experimental conditions in free-running mode and the Q-switched mode, which were pumped by flashlamp at a repetition rate of 1 Hz with a pulse duration of 120 μs. In free-running operation, the slope efficiencys and the extrapolated energy thresholds were determined to be 1.0%,0.44% and 0.54 J, 0.76 J for Nd∶KGW and Nd∶YAG rods, respectively. The slope efficiency of 0.16% and 0.07% for the Nd∶KGW and the Nd∶YAG were obtained in Q-switched mode with the extrapolated energy threshold of 5.9 J and 12.5 J, respectively.