Modeling of three-dimensional exciplex pumped fluid Cs vapor laser with transverse and longitudinal gas flow  

作　　者：Chenyi Su Xingqi Xu Jinghua Huang Bailiang Pan 

机构地区：[1]Department of Physics,Zhejiang University,Hangzhou 310027,China [2]Interdisciplinary Center for Quantum Information,State Key Laboratory of Modern Optical Instrumentation,and Zhejiang Province Key Laboratory of Quantum Technology and Device,Department of Physics,Zhejiang University,Hangzhou 310027,China

出　　处：《High Power Laser Science and Engineering》2021年第2期184-192,共9页高功率激光科学与工程（英文版）

基　　金：the Aerospace Science and Technology Fund(No.KM20170269);the National Natural Science Foundation of China(No.11874322).

摘　　要：Considering the thermodynamical fluid mechanics in the gain medium and laser kinetic processes,a three-dimensional theoretical model of an exciplex-pumped Cs vapor laser with longitudinal and transverse gas flow is established.The slope efficiency of laser calculated by the model shows good agreement with the experimental data.The comprehensive three-dimensional distribution of temperature and particle density of Cs is depicted.The influence of pump intensity,wall temperature,and fluid velocity on the laser output performance is also simulated and analyzed in detail,suggesting that a higher wall temperature can guarantee a higher output laser power while causing a more significant heat accumulation in the cell.Compared with longitudinal gas flow,the transverse flow can improve the output laser power by effectively removing the generated heat accumulation and alleviating the temperature gradient in the cell.

关 键 词：excimer lasers gas flow simulation theoretical model 

分 类 号：TN248[电子电信—物理电子学]