LD泵浦的声光调Q 1.34 μm Nd:GdVO4激光器

对于连续泵浦的内腔式倍频、参量振荡等非线性激光器件，常需要准连续运转来提高腔内的峰值功率，声光调Q是目前获得准连续运转激光器的重要途径。在LD端泵a向生长Nd:GdVO4晶体1.34 μm静态激光的基础上，利用声光调Q对1.34 μm的动态激光进行了实验研究。当声光调Q器件重复率为5 kHz时，获得的最短脉宽为170 ns，此时的单脉冲能量为44.8 μJ，峰值功率为256 W。实验表明，1.34 μm平均功率随声光调Q的重复率增加而增大，脉冲宽度随重复率的减小而变短，因而低重复率下可得到更高的峰值输出功率。

Diode pumped AO Q-switched 1.34 μm Nd:GdVO4 laser

For the nonlinear laser device with intracavity doubling or parameter oscillator, the quasi-continuous operating is needed to improve the peak power inside the laser cavity，and AO Q-switching is an important way to obtain the quasi-continuous laser. Based on the static output of a diode pumped a-cut Nd:GdVO4 laser at 1.34 μm, the dynamic output properties of the AO Q-switched laser are experimentally studied. When the repetition rate of the AO Q-switch is 5 kHz, the output pulse width is 170 ns, the pulse energy of 44.8 μJ and the peak power of 256 W are obtained. Experimental results indicate that average output power at 1.34 μm will increase as the repetition rate of AO Q-switching increase, but the pulse width will be narrower and the peak power will be higher when the repetition rate gets lower.