In this paper, a single-mode 980nm Yb-doped fiber laser was studied carefully in theory and experiment.
Based on the theoretical research, we chose an appropriate fiber length of 36.5 cm. In the experiment, by
adopting two 0° fiber ends as cavity mirrors, the Yb-doped fiber laser generated a total output power of
1.32 W at 980 nm with the slope efficiency of 75.3%.Through frequency doubling with BIBO crystal, a
total output power of 15 mW at 490.8 nm was obtained. Simultaneously, we produced a 980nm Yb-doped
single-mode pulse fiber laser pumped by an acousto-optics Q-switched Nd:YAG laser. The pulse fiber laser
generated a total average power of 100 mW at 980 nm when the laser pulse was 10 ns at repetition
frequency of 16 kHz.
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