1 College of Optoelectric Science and Engineering, National University of Defense Technology, Changsha 410073, China; 2 Hunan Provincial Key Laboratory of High Energy Laser Technology, Changsha 410073, China; 3 Hunan Provincial Collaborative Innovation Center of High Power Fiber Laser Department, Changsha 410073, China
Abstract The superfluorescent Yb-doped fiber source operating near 980 nm is studied. The design requirement is theoretically discussed aiming to suppress the amplified spontaneous emission around 1030 nm in the 980-nm superfluorescent fiber source. Based on the theoretical study, a multi-Watt, all-fiber, bi-directional, pumped, superfluorescent source operating near 980 nm is designed and experimentally demonstrated for the first time, to the best of our knowledge. The recorded 8.38-W combined output power is obtained with a 3-dB bandwidth about 3.5 nm. The power scaling of the 980-nm superfluorescent fiber source is limited by the parasitic laser oscillation.
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