LD包层抽运光纤激光器抽运方式的理论分析

Theoretical Analysis of the Pump Modes of LD Pumped Double clad Fiber Lasers

本文通过数值分析研究了 L D抽运方式对双包层光纤激光器增益特性及光纤内光功率分布的影响。结果表明 ,两端抽运可以显著降低光纤注入端的功率密度 ,同时能够保证光纤内功率和增益分布的均匀性 。

The gain character and power density distribution in the active fiber of double clad fiber laser (DCFL) with different pump modes are investigated by means of numerical analysis.It is demonstrated that by using two end pump mode the power density at the input parts of the fiber can be reduced obviously,and the uniformity of gain and power density in the fiber can be maintained simultaneously.The results show that two end pump is the optimum pump mode for high power DCFLs.