Demonstration of multi-Watt all-fiber superfluorescent source operating near 980 nm

摘要

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.