980nm准连续单模掺镱光纤激光器及放大器实验研究

A Quasi-Continuous-Wave 980 nm Yb-Doped Single-Mode Fiber Laser and Amplifier

采用声光调Q946 nm Nd:YAG固体激光器作抽运源,高掺杂单模掺镱光纤作增益介质,实现了980 nm的准连续掺镱光纤激光器。当重复频率为16 kHz时,脉冲宽度为10 ns,激光平均功率为73 mW,光谱带宽为4 nm。以此激光振荡器作为种子源,用长度为28 cm的单模掺镱光纤作为光纤放大器对种子光进行放大。获得了平均功率为167 mW的放大脉冲激光输出,峰值功率为700 W,脉冲宽度为15 ns。

A single-mode-quasi-continuous-wave 980 nm Yb-doped fiber laser is realized.An acousto-optics Q-switched Nd：YAG laser at 946 nm is used as pump source and the high Yb-doped single-mode fiber is used as gain medium.The total average power of the laser pulse is 73 mW at 980 nm when the pulse duration is 10 ns at the repetition frequency of 16 kHz.The quasi-continuous-wave 980 nm fiber laser oscillator used as seed source is amplified by another 28 cm Yb-doped fiber.As a result,the pulse with average output power of 167 mW is generated.The pulse width is 15 ns with the peak power of 700 W.