High-Entropy MXene-Based Multiple Soliton States Generation

High-entropy (HE) MXenes with multi-principal elements provide wide degrees of tunability that aid in fundamental studies of their electrical and optical properties. Recently, we reported on the superiority of the nonlinear optical characteristics of HE MXene TiVCrMoC₃T_x nanosheets (NSs). In this work, the application of these HE MXene TiVCrMoC₃T_x NSs to ultrafast soliton dynamics is studied. The home-made TiVCrMoC₃T_x NSs based saturable absorber was fabricated and incorporated into an Er-doped fiber laser cavity, resulting in the generation of stable solitons with a pulse width of 940 fs. Notably, through adjustment of the pump power and the polarization controller, bound-state soliton pulses and two types of vector solitons were obtained. This work indicates that TiVCrMoC₃T_x NSs could be used to fabricate remarkable nonlinear photonic devices and explore the dynamics of various mode-locked pulses.