中文摘要：

文章对1064 nm波段泵浦掺铥光纤激光器进行理论分析,以获得到对实际研究有用的结论。先从理论分析计算了1064 nm泵浦掺铥光纤激光器的粒子速率方程和传输方程,并在传输方程中考虑了泵浦光和激光本征吸收影响。利用matlab软件理论模拟不同长度光纤的正反向泵浦光和激光在光纤中的分布。模拟讨论了输出功率与最佳光纤长度的关系,以及激光本征吸收系数和掺铥离子浓度对输出功率的影响。最佳光纤长度时的激光输出功率最高。考虑激光本征吸收是合理的,较小的本征吸收有较高的最大的输出功率。存在一个最佳的掺杂离子浓度使得输出功率最大。

英文摘要：

The particle rate equations and power propagation equations of thulium-doped lasers are analyzed. Pump light and intrinsic absorption are also considered in the propagation equations. For different fiber length, the distribution of the positive and reverse pump light and laser in the fiber are simulated with Matlab software. The relationship between output power and optimal fiber length is also simulated and analyzed by way of theoretical modeling. In addition, the effect of intrinsic absorption coefficient and dopant concentrations on output power is discussed. The laser power is the highest with the best optical fiber length. It is reasonable that intrinsic absorption coefficient is taken into consideration. Smaller intrinsic absorption coefficient has a higher maximum output power. The highest output power can be obtained when the concentration of the doping ions is optimal.