We have experimentally demonstrated the mode-locked and Q-switched fibre lasers based on MXene Ti₃C₂T_x as a saturable absorber (SA). MXene Ti₃C₂T_x was obtained using selective etching and then embedded into polyvinyl alcohol (PVA) to form the thin film. A stable soliton mode-locked laser was achieved when the Ti₃C₂T_x film was added in the Erbium-doped fibre laser cavity, and the pump power was adjusted between 55 and 144 mW. The pulse width of mode-locked laser was obtained to be 3.68 ps, while the repetition rate was 1.89 MHz. The maximum average output power and pulse energy were measured to be 24.42 mW and 12.92 nJ. After we decreased the cavity length by removing 100 m of SMF, the same SA could produce Q-switched laser instead of mode-locked laser. The Q-switched laser operated within the pump power of 19–66 mW, having the shortest pulse width and operating wavelength of 2.6 µs and 1557 nm, respectively.

我们已经通过实验证明了基于 MXene Ti ₃ C ₂ T _x作为可饱和吸收体 (SA)的锁模和调Q 光纤激光器。MXene Ti ₃ C ₂ T _x使用选择性蚀刻获得，然后嵌入聚乙烯醇（PVA）中以形成薄膜。当 Ti ₃ C ₂ T _x在掺铒光纤激光器腔内加入薄膜，泵浦功率在55~144 mW之间调节。获得锁模激光的脉冲宽度为3.68 ps，而重复率为1.89 MHz。测得的最大平均输出功率和脉冲能量为 24.42 mW 和 12.92 nJ。在我们通过去除 100 m 的 SMF 来减少腔长后，相同的 SA 可以产生 Q 开关激光器而不是锁模激光器。调Q激光器在19-66 mW的泵浦功率下工作，最短脉冲宽度和工作波长分别为2.6 µs和1557 nm。