A single-resonant beta barium borate crystal optical parametric oscillator with high pulse energy output at the H-β Fraunhofer line of 486.1 nm was demonstrated. Pumped by a single-frequency 355 nm ultraviolet pulsed laser at 10 Hz repetition rate with maximum pulse energy of 411 mJ, maximum output energy of 162 mJ blue laser pulse at 486.1 nm was successfully obtained from a plano-concave cavity with a 40% output coupler, the corresponding optical-to-optical conversion efficiency was up to 39.4%, and the pulse width was around 9.6 ns. The blue laser beam size was 4.4 mm 5.1 mm with the beam divergence angles of θ_x = 2.2 mrad and θ_y = 2.5 mrad. The peak power of output blue laser was 16.9 MW, and the signal linewidth was around 0.34 nm.

演示了在H-βFraunhofer线输出的高脉冲能量为486.1 nm的单谐振β硼酸钡晶体光学参量振荡器。由平凹腔以40％的输出成功获得以10 Hz重复频率的单频355 nm紫外脉冲激光器泵浦，最大脉冲能量为411 mJ，在486.1 nm处成功获得162 mJ蓝色激光脉冲的最大输出能量。耦合器，相应的光电转换效率高达39.4％，脉冲宽度约为9.6 ns。蓝色激光束尺寸为4.4毫米5.1毫米与光束发散角θ _X = 2.2毫弧度和θ _ÿ = 2.5毫弧度。输出蓝色激光的峰值功率为16.9 MW，信号线宽约为0.34 nm。