研究了绿光平均功率达84W的高稳定声光调Q全固态激光器。通过理论分析和试验研究,针对KTP热效应以及Nd∶YAG棒的热致双折射效应,设计并优化了谐振腔来压窄脉宽。采用35个20W的高功率LD侧面抽运Nd∶YAG棒和Ⅱ类相位匹配KTP晶体(24℃时相位匹配角为Φ=23.6°,θ=90°,尺寸为7mm×7mm×7mm),采用双声光Q开关,高效平凹结构,实现了高功率内腔倍频激光器的稳定运转;在抽运电流25A时,获得了重复频率为10kHz,脉冲宽度优于45ns,输出功率为84W的高功率、高重频、窄脉宽绿光(532nm)输出,光_光转换效率为14.3%,不稳定度为±3%。 The high stable acousto-optic Q-switched Q all-solid-state laser with average green power of 84W was studied. Through theoretical analysis and experimental research, aiming at the KTP thermal effect and the thermal induced birefringence effect of Nd:YAG rod, a resonant cavity is designed and optimized to suppress the pulse width. Nd: YAG rods and phase II matched KTP crystals were pumped at 35 20W high power LD sides (phase angle φ = 23.6 ° and θ = 90 ° at 24 ° C and dimensions of 7 mm × 7 mm × 7 mm) Double-acousto-optic Q-switch and high-efficiency plano-concave structure to realize the stable operation of the high-power lumen frequency doubled laser. When the pumping current is 25A, the repetition frequency is 10kHz, the pulse width is better than 45ns and the output power is 84W Power, high repetition rate, narrow pulse width green light (532nm) output, light_light conversion efficiency of 14.3%, the instability of ± 3%.