中文摘要：

基于可饱和吸收体和被动调Q微晶片种子源，对双通掠入射Nd：YVO4板条放大器进行了实验研究。脉冲宽度为90ps、脉冲重复频率为100kHz、光束质量因子为1．16的激光作为种子源，功率从100μW到10mW可调，分别采用新型的液态金属和传统的薄铟膜作为板条放大器的热传导材料。测量结果显示，采用液态金属能大幅降低板条抽运面的温度。将液态金属作为板条放大器的导热材料，10mW的种子光源在抽运功率为55W时，经过掠入射Nd：YVO4板条双通放大，最终获得13w激光输出，光光效率达到23％，脉冲峰值功率为1．2MW，脉冲能量为130μJ，光束质量Mx2=1．30，My2=1．28。

英文摘要：

The experimental study of the double-pass grazing incidence Nd： YVO4 slab amplifier is carried out based on a saturable absorber and passively Q-switched microchip seed laser. The microchip laser with pulse duration of 90 ps, repetition rate of 100 kHz and beam quality factor M2 = 1.16 acts as seed laser with varying output power from 100μW to 10 mW. The new liquid pure metal grease and the traditional thin indium foil are used to conduct as the thermal contact material of the bounce amplifier, respectively. Experimental results show that the liquid pure metal grease conducted as the thermal contact material can significantly reduce the temperature of the slab pump face. An output power of 13 W is obtained with the liquid pure metal grease conducted as the thermal contact material for 10 mW seed power with pump power of 55 W at an optical-optical efficiency of 23%, achieving pulse peak power of 1.2 MW and pulse energy of 130 μJ. The beam quality factor is Mx2=1.30, My2 =1.28.