980-nm Yb-doped single-mode fiber laser and its frequency doubling with BIBO

Abstract

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.