端面泵浦掺镱双包层光纤激光器功率输出特性研究

Output characteristics of end-pumped Yb-doped double-cladding fiber laser

基于端面泵浦掺镱双包层光纤激光器的速率方程,应用MATLAB语言编程,分别数值模拟了功率为60瓦前端泵浦、后端泵浦和双端都为30瓦泵浦时掺镱双包层光纤激光器对应的功率输出特性和粒子数密度值特性,增大不同端面输入功率观察输出功率特性,研究得到后端泵浦上能级粒子数分布平坦,输出功率较大,为50.4705瓦。并且增大输入功率时得到双端泵浦输出功率较大。研究结论为提高掺镱双包层光纤激光器功率输出提供理论和实验参考。

Based on the rate equations of end-pumped Yb-doped double-cladding fiber laser, Output and particle number density characteristics were simulated at front pump mode for 60 W.black and double pump mode for 30 W, and the relation of output power with pump power were also studied by MATLAB. The results that the larger output power was obtained at the upper lever flattened particle population distribution for the back pump mode, it is 50.4705 W. And the higher output power was obtained with increasing the input power at the double end pumped. The results provides theoretic basis and experiments references for the research of Yb-doped double-cladding fiber laser.