窄线宽全光纤激光器实现666W高功率输出

Narrow linewidth all-fiber laser with 666W power output

搭建了一台主振荡功率放大(MOPA)结构的窄线宽全光纤激光器。利用噪声相位调制技术将单频激光线宽展宽至0.3GHz,通过四级放大器结构对10mW的窄线宽种子激光进行放大,获得了功率为666W的窄线宽激光输出。该窄线宽激光器输出功率仅受限于泵浦功率,增加泵浦功率有望进一步提高输出功率。

A master oscillator power amplifier（MOPA） structured narrow-linewidth Yb-doped fiber laser is set up in all-fiber format.In the system,a single frequency laser is broadened to be a 0.3 GHz-linewidth seed by using noise phase modulation technique.The power of the seed is then scaled from 10 mW up to 666 W through a four-stage power amplifier chain.Further power-scaling of this MOPA system can be expected since our experiment is only pump-power limited.