Two-dimensional silicene nanosheets is an emerging material in many fields. However, there is a lack of research on nonlinear optical applications of silicene nanosheets so far. Here, we demonstrate a subpicosecond soliton mode-locked erbium-doped fiber laser using microfiber-based silicene nanosheets as a saturable absorber for the first time, to the best of our knowledge. Few-layer silicene nanosheets, which were prepared by liquid-phase exfoliation method, have a modulation depth is 20% and the saturation intensity is 5.78 MW/cm². Stable soliton pulses were generated at 1531.48 nm with a 3-dB bandwidth of 2.84 nm, a pulse duration of 937 fs, and a time-bandwidth product of 0.34. Our results indicate that few-layer silicene nanosheets could be used as an excellent photonic device for short-pulse laser, and promote the applications of silicene-based nonlinear photonics.

二维硅纳米片是许多领域中的新兴材料。然而，迄今为止，对硅纳米片的非线性光学应用缺乏研究。在这里，据我们所知，我们首次展示了基于微纤维的硅纳米片作为可饱和吸收体的亚皮秒孤子锁模掺光纤激光器。通过液相剥离法制备的几层硅纳米片的调制深度为20％，饱和强度为5.78 MW / cm ^2。。在1531.48 nm处产生稳定的孤子脉冲，其3-dB带宽为2.84 nm，脉冲持续时间为937 fs，时间带宽积为0.34。我们的结果表明，少层硅纳米片可以用作短脉冲激光的优良光子器件，并促进基于硅的非线性光子学的应用。