LD泵浦Nd∶YVO4/V∶YAG被动调Q 1.34 μm激光器

利用新型实用的晶体材料V∶YAG作为被动调Q元件,实现了激光二极管泵浦Nd∶YVO4的1.34 μm激光谱线调Q运转.研究了饱和吸收体小信号透过率对激光稳定性的影响,得出使用小信号透过率T0小的V∶YAG可使激光脉冲能量和重复频率稳定的结论.在1.6 W的泵浦条件下,T0为96%、89%和85%时,4 h脉冲能量和重复频率稳定性分别为15%、10%和5%.使用T0为85%的V∶YAG,获得了平均功率输出功率96 mW,脉宽8.8 ns,重复频率25 kHz,峰值功率436 W,脉冲能量3.84 μJ的实验结果.

LD-pumped Nd: YVO4/V: YAG Passively Q-switched 1.34 μm Laser

A LD-pumped Nd∶YVO_4 laser passively Q-switched at 1.34 μm by using V∶YAG which is a new type of crystal saturable absorber.The relationship between the stability of pulse laser and the small signal transmission of V∶YAG was studied.The results show the laser is stable when the V∶YAG with smaller signal transmission is used.When the pump power is 1.6 W,the stability of pulse energy and repetition rate for 4 hours is 15%,10,5% for V∶YAG with small signal transmission of 96%,89%,85%,respectively.The results of average power of 96mW,minimum pulse width (FWHM) of 8.8 ns,pulse repetition rate of 25 kHz,peak power of 436 W and pulse energy of 3.84 μJ were obtained for small signal transmission of 85%.