A domestic Yb-doped double-cladding large-mode-area fiber was used for amplication experiment.With the milliwatt seed laser pulse inputting, 103 gain was obtained.

• 同时利用国产双包层大模面积光纤进行了放大实验,在平均功率为毫瓦量级的种子光脉冲输入情况下,获得了103增益。