镱钠共掺氟化钙锁模激光器产生190 fs光脉冲

摘要

在半导体激光器高功率抽运的镱、钠共掺氟化钙（Yb,Na：CaF_2）激光器中,通过对晶体的负热透镜效应的数值模拟,进行激光器腔型的调节和优化,使得该激光器在采用2%的耦合输出镜和吸收抽运功率为7.8 W的条件下,获得了脉冲宽度为190 fS、平均输出功率为503 mW、中心波长为1034 nm、重复频率为82.4 MHz的连续锁模脉冲序列.如果计算晶体表面反射等其他形式的泄漏输出,激光器的总平均输出功率为905 mW.%In the paper,the demonstration of a high-power LD-pumped Yb,Na：CaF2 femtosecond laser is presented,which the cavity is optimized concerning the numerical simulation for the thermal lens effect.With a 2%output coupler,a continuous-wave mode-locked pulse train with a pulsewidth of 190 fs,the average output power of 503 mW,the center wavelength at 1034 nm and a repetition frequency of 82.4 MHz is obtained under the absorbed pump power of 7.8 W.If other forms of output are recorded,such as the reflection of the crystal surface,the total output power is 905 mW.