流道结构对半导体泵浦流动铷蒸气激光器特性影响  

Influence of flow channel structure on characteristics of laser diode pumped flowing-gas rubidium vapor laser

作　　者：潘丽 何洋[1] 马利国[3] 季艳慧 刘金岱 陈飞[1] PAN Li;HE Yang;MA Li-guo;JI Yan-hui;LIU Jin-dai;CHEN Fei(State Key Laboratory of Laser Interaction with Matter,Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China;University of Chinese Academy of Sciences,Beijing 100049,China;Southwest Institute of Technical Physics,Chengdu 610041,China)

机构地区：[1]中国科学院长春光学精密机械与物理研究所激光与物质相互作用国家重点实验室,吉林长春130033 [2]中国科学院大学,北京100049 [3]西南技术物理研究所,四川成都610041

出　　处：《中国光学（中英文）》2024年第3期617-629,共13页Chinese Optics

基　　金：国家自然科学基金项目(No.62005274,No.61975203);激光与物质相互作用国家重点实验室自主基础研究课题(No.SKLLIM2012);中国科学院青年创新促进会会员(No.2022216)。

摘　　要：为研究气体流道结构对半导体泵浦流动碱金属蒸气激光器(FDPAL)输出性能的影响,本文结合FDPAL中气体传热、流体力学和激光动力学过程建立了FDPAL理论模型,以侧面泵浦Rb蒸气FDPAL(Rb-FDPAL)为仿真对象,分析气体流动方向、流道横截面积和流道形状等对Rb-FDPAL输出性能的影响。结果表明,采用横流方式,通过提高流道横截面积并将气体流道与蒸气池连接部位设置为砌体结构时,蒸气内涡流得到有效抑制,气体流速增加,蒸气池内热效应更小,Rb-FDPAL的激光输出功率和斜率效率更高,仿真结果与实验相符。In order to study the influence of the gas flow channel structure on the output performance of the flowing-gas diode pumped alkali vapor laser(FDPAL),we established the FDPAL theoretical model based on the gas heat transfer,fluid mechanics,and laser dynamics process in FDPAL using side pumping Rb vapor FDPAL(Rb-FDPAL)as the simulation object.The impacts of the gas flow direction,the cross-sectional area and the shape of the runner on the Rb-FDPAL’s output performance were analyzed.The results show that with the horizontal flow method and by increasing the cross-sectional area of the flow channel and setting a masonry structure as the connection between the gas flow channel and the steam pool,we effectively suppress the vortex in the vapor,increase the gas flow rate,and decrease the thermal effect of the steam pool.Rb-FDPAL's laser output power and slope efficiency are higher,and the simulation results are consistent with the experiment.

关 键 词：高功率激光器 气体激光器 碱金属蒸气激光器 气体流动 

分 类 号：TP248[自动化与计算机技术—检测技术与自动化装置]