用光纤耦合激光二极管抽运Cr,Yb:YAG晶体获得了1.03 μm的自调Q激光输出,输出的调Q脉冲非常稳定,抽运阈值功率为680 mW,脉冲宽度为3.3 ns,获得的平均功率为156 mW,斜率效率为18.5%。随着抽运功率的增大,重复频率成线性增长,而脉宽略有减少,单脉冲能量和峰值功率都始终呈增大趋势。光束质量因子M2为1.17。

Using a fiber-coupled laser diode as the pumping source, the 1.03 μm self-Q-switched laser in the Cr,Yb:YAG crystal is demonstrated. The output Q-switched pulses are very stable, the threshold pumping power is 680 mW, the pulse duration is as short as 3.3 ns, the mean output power of 156 mW is obtained and the slope efficiency is about 18.5%. With the rise of the pump power, the repetition rate increases linearly, the pulse width decreases very slowly and the pulse energy and peak power increase slowly with absorbed pump power. The beam quality factor M2 is measured to be 1.17.