【摘要】 本文采用MAX相（MAX-PM）材料Nb₄AlC₃作为可饱和吸收体（SA），研制了传统孤子（CS）锁模掺铒光纤（EDF）激光器。首先，利用液相剥离（LPE）法制备了Nb₄AlC₃纳米片，然后采用拉锥光纤制作了Nb₄AlC₃-SA。该Nb₄AlC₃可饱和吸收体的饱和强度和调制深度分别为2.02 MW/cm²和1.88%。基于所制备的Nb₄AlC₃可饱和吸收体，研制了传统孤子锁模掺铒光纤激光器。该激光器的中心波长、脉冲持续时间和脉冲重复率分别为1 565.65 nm、615.37 fs和24.63 MHz。该锁模激光器性能优越，特别是在脉冲持续时间方面表现优异。本研究充分证实Nb₄AlC₃具有优异的非线性可饱和吸收特性，同时也为空气稳定型超快光子器件的深入研究拓宽了途径。更多还原

【Abstract】 In this paper, a conventional soliton（CS） mode-locked erbium-doped fiber（EDF） laser was developed using MAX phase material（MAX-PM） Nb₄AlC₃ as a saturable absorber（SA）. First, the liquid phase exfoliation（LPE） method was utilized to prepare Nb₄AlC₃ nanosheets, and then a piece of tapered fiber was adopted to fabricate Nb₄AlC₃-SA. It was found that the saturation intensity and modulation depth of the Nb₄AlC₃-SA are 2.02 MW/cm² and 1.88 %. Based on the Nb₄AlC₃-SA, a conventional soliton（CS） modelocked EDF laser was achieved. The central wavelength, pulse duration, and pulse repetition rate were found to be 1 565.65 nm, 615.37 fs, and 24.63 MHz, respectively. The performance is competitive and particularly superior in terms of pulse duration. This study fully confirms that Nb₄AlC₃ possesses marvellous nonlinear saturable absorption properties and opens new possibilities for further research on air-stable ultrafast photonic devices.更多还原