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采用中心波长为852.3 nm、线宽为0.17 nm的光纤耦合半导体激光器作为抽运源,室温下充入60 k Pa氦气和20 k Pa乙烷、5 mm长的铯蒸气池作为激光增益介质开展了端面抽运铯蒸气激光实验研究。蒸气池工作温度为107.6℃时,改变输出镜反射率优化铯激光输出性能,获得最佳输出镜反射率为48.79%。连续抽运模式下,注入抽运功率为4.76 W时获得1.16 W的894.57 nm连续激光输出,斜效率为28.8%,光光转换效率达24.4%;脉冲抽运模式下,注入抽运功率为14.1 W时获得了2.5 W稳定铯激光输出。
A fiber-coupled semiconductor laser with a center wavelength of 852.3 nm and a linewidth of 0.17 nm was used as a pumping source. 60 kPa helium, 20 kPa ethane and 5 mm long cesium vapor cells were charged at room temperature as the laser gain medium End - pumped cesium vapor laser experimental study. When the operating temperature of the steam cell is 107.6 ℃, the output mirror reflectivity is optimized to optimize the cesium laser output performance, and the best output mirror reflectivity is 48.79%. In the continuous pumping mode, a continuous laser output of 1.16 W at a pumping power of 4.76 W was obtained, with an oblique efficiency of 28.8% and a light conversion efficiency of 24.4%. In the pulse pumping mode, the pumping power was 14.1 W at 2.5 W stable cesium laser output.