针对传导冷却和端面抽运的激光增益模块特点,设计了一台10kW级高功率全固态板条激光放大器实验装置。分析了激光注入功率密度和入射角度等参数对激光放大器提取效率的影响。实验测试了注入功率密度与激光增益模块光-光转换效率的关系,实验结果与理论分析基本吻合。激光放大器实验装置的种子源通过一级预放大器和两级主放大器放大后获得了高功率和高光束质量的激光输出,激光放大器输出功率达为11.3kW,光束质量7.56倍衍射极限,出光时间110s,光-光转换效率达30%。 Aiming at the characteristics of laser gain module of conduction cooling and end pumping, a 10kW high power all-solid slab laser amplifier experimental device was designed. The influence of laser injection power density and incident angle on the extraction efficiency of laser amplifier was analyzed. The relationship between the injection power density and the laser-to-light conversion efficiency was experimentally tested. The experimental results are in good agreement with the theoretical analysis. The seed source of the laser amplifier experimental device is amplified by a preamplifier and a two-stage main amplifier to obtain a laser output with high power and high beam quality. The output power of the laser amplifier is 11.3kW, the beam quality is 7.56 times the diffraction limit, and the light output time is 110s , Light - light conversion efficiency of 30%.