Yu Hailong, Zhang Hanwei, Lv Haibin, Wang Xiaolin, Leng Jinyong, Xiao Hu, Guo Shaofeng, Zhou Pu, Xu Xiaojun, Chen Jinbao
Appl Opt. 2015 May 10;54(14):4556-60. doi: 10.1364/AO.54.004556.
We demonstrate a direct diode-pumped all-fiber-integrated fiber laser based on master oscillator power amplifier configuration at 1080 nm, producing maximum output power of 3.15 kW with corresponding optical to optical efficiency of 75.1%. Further power scaling is pump-limited and theoretical analysis demonstrates that 4 kW output power can be further achieved without stimulated Raman scattering. Near diffraction-limited beam quality (M(2) ~ 1.6 in the x and y directions) is also achieved at the maximum output power. This compact prototype laser has excellent stability and reliability, which could benefit many practical applications, such as industrial processing.
我们展示了一种基于主振荡器功率放大器配置的直接二极管泵浦全光纤集成光纤激光器，其工作波长为1080 nm，产生的最大输出功率为3.15 kW，相应的光光效率为75.1%。进一步的功率扩展受泵浦限制，理论分析表明，在无受激拉曼散射的情况下，可进一步实现4 kW的输出功率。在最大输出功率下，还实现了接近衍射极限的光束质量（x和y方向的M(2)约为1.6）。这种紧凑的原型激光器具有出色的稳定性和可靠性，可惠及许多实际应用，如工业加工。
