A time dependent 3D model for pulsed diode-pumped Rb vapor laser is established by using the methods of circular cutting and alternating-direction implicit (ADI). The model is validated by comparing with Zhao’s experiment. The spatiotemporal distributions of intensities of pump light and laser, and population densities of different energy levels are presented and discussed in a single-pulse diode-pumped Rb vapor laser. The lasing dynamics and characteristics of a multi-pulse diode-pumped Rb vapor laser are also calculated and analyzed, and results show that higher peak power and average power of each laser pulse can be obtained if the pump power is greater. Moreover, for constant pump pulse width, the peak power of subsequent laser pulses (in addition to the first pulse) increases with increasing time interval between two adjacent pump pulses. For constant time interval between two adjacent pump pulses, the large pump pulse width is not conducive to improving the peak power of subsequent laser pulses.

利用圆形切割和交替方向隐式（ADI）方法建立了脉冲二极管泵浦的Rb蒸气激光器的时间相关3D模型。通过与赵的实验进行比较来验证该模型。在单脉冲二极管泵浦的Rb蒸气激光器中，给出并讨论了泵浦光和激光强度的时空分布以及不同能级的人口密度。还计算和分析了多脉冲二极管泵浦Rb蒸气激光器的发射动力学和特性，结果表明，如果泵浦功率更大，则可以获得更高的峰值功率和每个激光脉冲的平均功率。此外，对于恒定的泵浦脉冲宽度，后续激光脉冲的峰值功率（除了第一脉冲之外）随着两个相邻泵浦脉冲之间的时间间隔的增加而增加。