皮秒级高功率紫外可调谐激光

Tunable High Power Picosecond Laser in Ultra-violet

采用 35 5nm主被动锁模YAG激光器作抽运源 ,结合BBO晶体的倍频调谐特性 ,获得了 2 0 0～ 35 0nm的皮秒级紫外可调谐激光 ,转换效率为 15 3 %～ 2 3 6 %。对影响参量光倍频转换效率的发散角、线宽进行模拟和分析 ,其结果与实验吻合。

Utilizing the SHG (second harmonic generation) tunable feature of nonlinear crystal BBO, an experiment of ultraviolet tunable high power picosecond laser in 200-350 nm with conversion efficiency from 15.3% to 23.6% was demonstrated. The influences of the divergence angle and the linewidth of the incident parametric light on the SHG conversion were calculated and compared with the experiments. The results can be used to determine the optimal working condition of optical parametric laser.