Shen Binglin, Pan Bailiang, Jiao Jian, Xia Chunsheng
Opt Express. 2015 Jul 27;23(15):19500-11. doi: 10.1364/OE.23.019500.
Comprehensive analysis of kinetic and fluid dynamic processes in flowing-gas diode-pumped alkali vapor amplifiers is reported. Taking into account effects of the temperature, the amplified spontaneous emission, the saturation power, the excitation of the alkali atoms to high electronic levels and the ionization, a detailed physical model is established to simulate the output performance of flowing-gas diode-pumped alkali vapor amplifiers. Influences of the flow velocity and the pump power on the amplified power are calculated and analyzed. Comparisons between single and double amplifier, longitudinal and transverse flow are made. Results show that end-pumped cascaded amplifier can provide higher output power under the same total pump power and the cell length, while output powers achieved by single- and double-end pumped, double-side pumped amplifiers with longitudinal or transverse flow have a complicated but valuable relation. Thus the model is extremely helpful for designing high-power flowing-gas diode-pumped alkali vapor amplifiers.
报道了对流动气体二极管泵浦碱金属蒸汽放大器中动力学和流体动力学过程的综合分析。考虑到温度、放大自发辐射、饱和功率、碱金属原子激发到高电子能级以及电离的影响，建立了详细的物理模型来模拟流动气体二极管泵浦碱金属蒸汽放大器的输出性能。计算并分析了流速和泵浦功率对放大功率的影响。对单放大器和双放大器、纵向流和横向流进行了比较。结果表明，在相同的总泵浦功率和池长下，端面泵浦级联放大器可以提供更高的输出功率，而单端和双端泵浦、纵向或横向流的双侧泵浦放大器所实现的输出功率具有复杂但有价值的关系。因此，该模型对于设计高功率流动气体二极管泵浦碱金属蒸汽放大器非常有帮助。
