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基于端面泵浦碱金属蒸汽激光器的速率方程模型，研究了半导体激光泵浦铯蒸汽激光器的工作特性。通过改变泵浦参数和蒸汽池参数，分析了各参数对激光器的泵浦吸收特性和激光输出特性的影响。结果表明：铯蒸汽吸收的功率和激光器的输出功率会随泵浦功率、乙烷压强的增大而出现饱和现象，随泵浦光中心波长对铯原子吸收波长的偏离而呈类高斯型的变化趋势，随氦气压强的增大而先增强后减弱。此外，还存在临界泵浦光线宽和温度范围使激光器保持正常运转。结果与已报道的实验现象有较好的符合，可为进一步的实验探索提供借鉴和参考。“,”Based on the rate-equation model of end-pumped alkali vapor laser, the performance of diode-pumped Cs vapor laser was researched. By adjusting the parameters of pump source and vapor cell, the effects of each parameter on the absorption and output performances were analyzed. Results show that the power absorbed by Cs vapor and output laser power become saturated when pump power and ethane pressure increases. The powers also have a Gaussian dependence on the deviation between pump light wavelength and transition wavelength. Besides, the powers increase initially and then begin to decrease when adding more helium into the vapor cell. Furthermore, there exist a critical line-width of pump light and a temperature range to maintain the operation of laser. The simulated results are in line with reported experiments well, which will supply significant reference for further experimental research.