Two-dimensional (2D) transition metal dichalcogenides (TMDs) have been extensively researched as nonlinear optical absorption materials for pulse fiber lasers applications. Herein, the liquid phase exfoliation method is employed to obtain HfSe₂ nanosheets, and HfSe₂/polyvinyl alcohol (PVA) film is prepared, whose modulation depth (ΔT) is measured to be 12.37 %. When inserting HfSe₂-based saturable absorber (SA) into the compact fiber cavity, stable Q-switching pulse train is established at 1558.8 nm. Setting pump power at 559 mW, the narrowest pulse width/largest single pulse energy is determined to be 1.883 μs/292.67 nJ. In comparison to the reported results recently, our laser performance is superior to other works. Our experimental results prove that HfSe₂ can be developed as a valid saturable absorption material for pulse laser generation.

二维（2D）过渡金属二卤化金属（TMD）已作为脉冲光纤激光器应用中的非线性光学吸收材料得到了广泛研究。在此，采用液相剥离法获得HfSe ₂纳米片，制备HfSe ₂ /聚乙烯醇（PVA）膜，测得其调制深度（ΔT）为12.37％。将基于HfSe ₂的可饱和吸收剂（SA）插入紧凑的光纤腔中时，在1558.8 nm处建立了稳定的Q切换脉冲序列。将泵浦功率设置为559 mW，最窄的脉冲宽度/最大的单脉冲能量确定为1.883μs/ 292.67 nJ。与最近的报道结果相比，我们的激光性能优于其他作品。我们的实验结果证明HfSe可以将₂开发为有效的饱和吸收材料，用于产生脉冲激光。