研制了一台无水冷激光二极管（LD）侧面抽运高能量、高光束质量全固态Nd:YAG调Q激光器。激光器采用半导体制冷器（TEC）进行整体冷却，有利于激光器的小型化、便携化。实验使用的Nd:YAG晶体棒尺寸为φ7 mm×100 mm，掺Nd的原子数分数为1.1%，LD抽运的最大峰值功率为15 kW。在10 Hz重复频率下获得最大脉冲能量为350 mJ、脉冲宽度为9.7 ns、光-电转换效率为6.7%、能量稳定度小于5%的1064 nm激光输出，水平和垂直方向的光束质量M²分别为7.7和12.3。

A LD side-pumped, high-energy, high-beam-quality, Q-switched all-solid-state Nd:YAG laser without water cooling is developed. The laser is integrally cooled by using a thermoelectric cooler (TEC), which is conducive to the miniaturization and portability of laser. The dimension of Nd:YAG crystal rod used in experiment is φ7 mm×100 mm and the Nd atom number fraction is 1.1%. The maximum peak power of LD pumping is 15 kW. The laser output at 1064 nm with the maximum pulse energy of 350 mJ, pulse width of 9.7 ns, optical-electrical conversion efficiency of 6.7% and energy stability less than 5% is obtained at 10 Hz repeat frequency. The beam qualities M² of horizontal and vertical directions are 7.7 and 12.3, respectively.