窄线宽光纤激光器在1030nm波段实现3kW近衍射极限输出

All-fiber narrow linewidth fiber laser achieved 3kW near diffraction limited output at 1030nm

基于大模场面积掺镱光纤搭建了全光纤1030 nm高功率窄线宽光纤激光主振荡功率放大系统,实现了3004 W的最高功率输出,斜率效率69.27%,是目前报道的输出功率最高的1030 nm波段近衍射极限光纤激光器。最高输出功率时,x,y方向的光束质量因子分别为1.169,1.174,3 dB光谱宽度为0.18 nm,放大自发辐射抑制比达到37 dB。

In this paper,we demonstrate an all-fiber high-power Yb-doped 1030 nm fiber laser based on master oscillator power amplifier structure.The record output power at 1030 nm up to 3004 W was achieved,along with a slope efficiency of 69.27%,which is the highest output power for 1030 nm near diffraction limited beam quality fiber laser.The beam quality factor is Mx 2=1.169,My 2=1.174,and full width at half maximum is 0.18 nm at maximum power level.The amplified spontaneous emission(ASE)suppression ratio reaches up to 37 dB.