对比研究了808 nm激光二极管列阵侧面泵浦Nd:YAG陶瓷与Nd:YAG单晶激光器在连续和被动调Q运转下的激光输出特性.对于Nd:YAG陶瓷激光器,在145 W泵浦功率,平平谐振腔20％输出耦合镜透过率时,获得最大44.28W的1 064 nm连续激光输出,光-光转化效率和斜效率分别为30.5％和38.2％.谐振腔中插入初始透过率87.89％的Cr4+:YAG晶体作为被动调Q开关,在124w泵浦功率下获得10.03 kHz重复频率,4.62W平均功率,5.54 kW峰值功率的准连续激光输出.同样实验条件下利用相同尺寸和掺杂浓度的Nd:YAG单晶进行对比,结果表明Nd:YAG陶瓷在高功率泵浦下具有广阔的应用前景.%Abstract; The continuous wave and passively Q-switched output performance of 808 nm laser diode array side pumped Nd: YAG ceramic and Nd: YAG single crystal are studied. In the condition of 145 W pump power and 20% output coupler transmission of a plano-plano resonator, the Nd: YAG ceramic obtains a continuous wave output power of 44. 28 W at 1 064 nm, the optical-to-optical conversion efficiency is 30. 5% , the slope efficiency is 38. 2% . In the same experimental condition, using Cr4+: YAG as the passive Q-switcher, the 10. 03 kHz quasi-continuous laser is obtained when the original transmission ratio is 87. 89% , the average power is 4. 62 W and the peak power is 5. 54 kW. Compared to the same size and doping concentration of Nd: YAG single crystal in the same experimental condition, the result shows that Nd: YAG ceramic laser has a widely application in high power.
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