LD泵浦Nd:YVO4/Cr4+:YAG被动调Q激光器性能实验研究

采用7.5 cm的直腔，对LD泵浦的Nd:YVO4/Cr4+:YAG被动调Q激光器的脉冲性能进行了相关实验研究。采用两块不同透过率的输出镜和两块不同小信号透过率的Cr4+:YAG晶体，分别研究了调Q脉冲的平均输出功率、脉冲宽度、重复频率、单脉冲能量以及峰值功率随泵浦功率的变化关系。在泵浦功率达到13.3 W时，采用6.5%的输出镜和小信号透过率为60%的Cr4+:YAG晶体得到了最短脉宽为15 ns且具有高稳定性和可靠性的调Q脉冲输出，其相应的峰值功率可达到3.04 kW，适用于军事国防领域。

Performance experiment of LD-pumped passively Q-switched Nd:YVO4/Cr4+:YAG laser

We investigated the pulse performance of a LD pumped passively Q switched Nd:YVO4/Cr4+:YAG laser with a 7.5 cm straight cavity. We employed two output plane mirrors with different transmissions and two Cr4+:YAG crystals with different initial transmissions to research the variation of average output power, pulse width, pulse frequency, single pulse energy and pulse peak power with pump power. High stability and reliability Q switched pulse with the shortest pulse width of 15 ns was obtained at T=6.5% and T0=60% when pump power was 13.3 W. Its corresponding peak power can reach 3.04 kW, so it has very broad application prospect in military defense.