Soliton interaction in a MXene-based mode-locked fiber laser
Huiran Yang, Mengting Qi, Xupeng Li, Ze Xue, Jiawei Cheng, Chenhao Lu, Dongdong Han, Lu Li, Yusheng Zhang, Feng Zhao
Abstract
MXenes are a class of two-dimensional layered structure ternary metal carbide or/and nitride materials. Recently, the MXene V 2 CT x has demonstrated excellent long-term stability, strong saturable absorption, and fast optical-switching capability, used to generate Q-switched and ultrashort pulsed lasers. However, bound-state fiber lasers based on V 2 CT x have not been reported yet. In this study, V 2 CT x is combined with a D-shaped fiber to form a saturable absorber device, whose modulation depth is measured to be 1.6%. By inserting the saturable absorber into an Er-doped fiber laser, bound states with different soliton separation and munbers are successfully obtained. Additionally, bound states with a compound soliton structure, such as the (2 + 2)- and (2 + 1)-type, are also realized. Our findings show that V 2 CT x can be developed as an efficient ultrafast photonics candidate to further understand the complex nonlinear dynamics of bound-state pulses in fiber lasers.