端面抽运DPAL三维模型及激光输出特性的模拟研究  

3D model of end pumped DPAL and simulation study of its output characteristics

作　　者：赵晓红[1] 李听听 王世红[1] 刘万发[2] 谭彦楠[2] 

机构地区：[1]北京邮电大学理学院,北京100876 [2]中国科学院大连化学物理研究所,辽宁大连116023

出　　处：《激光与红外》2016年第10期1238-1243,共6页Laser & Infrared

基　　金：中国科学院化学激光重点实验室开放课题基金资助

摘　　要：根据激光三能级速率方程理论,考虑抽运光聚焦的空间分布,建立三维DPAL速率方程组的理论模型,结合激光系统运行的边界条件,通过数值方法,对模型进行求解,对端面抽运铷蒸气激光器的输出特性进行了详细分析,包括抽运光聚焦光斑半径、聚焦位置、蒸气池长度等参量对模式匹配效率、阈值抽运功率和斜率效率的影响。在模式匹配最佳时,计算了对介质长度对激光输出和阈值的影响。根据抽运光功率,以获得最大激光输出功率为目标,给出了激光器系统的优化参数,包括介质长度、抽运光聚焦在介质中的聚焦位置、输出耦合反射率。According to the laser three-level rate equation theory and spatial distribution of pump diode focusing,theoreticalmodel of three-dimensional DPAL rate equations is established. The model was solved by numerical methodwith the boundary conditions of the laser system. The output characteristics of end pumped rubidium vapor laser wereanalyzed in detail. Meanwhile, the influence of some parameters on efficiency of mode matching, threshold pump powerand the slope efficiency were analyzed,including focusing spot radius of pumping light,focusing position and gain celllength, etc. The influence of the medium length on the laser output and the threshold value was calculated at the bestmode matching. In order to obtain the maximum laser output power, the optimization parameters of the laser systemwere given,including the medium length,the focusing position of the pump and the output coupling reflectivity.

关 键 词：3D模型 模式匹配 半导体抽运碱金属蒸汽激光器 激光速率方程 

分 类 号：TN241[电子电信—物理电子学]