为提高半导体激光抽运碱金属蒸气激光器(DPAL)的输出功率, 用三能级速率方程理论对端面抽运半导体激光抽运碱金属铷激光器的输出特性进行了模拟，得到了抽运功率、抽运光带宽、介质温度、长度等参数对激光器输出功率的影响，模拟结果与已有文献的出光实验结果相符，在此基础上提出了抽运光参数确定的条件下，以提高激光输出功率及光光转换效率为目标的DPAL增益池的优化设计参数。

The diode pumped alkali rubidium laser is investigated by the three level rate equations for improving the laser output power of diode pumped alkali vapor laser (DPAL). The systemic conditions are considered, including pump power, pump bandwidth, gain medium cell temperature and length. The simulation results are essentially coincident with the existing experiment results. Furthermore, we put forward the optimal design parameters of gain cell for high output power and optical-optical conversion efficiency with a definite pump condition.