Ultrathin 2D Transition Metal Carbides for Ultrafast Pulsed Fiber Lasers

• DOI: 10.1021/acsphotonics.7b01428
• Publication Date: 2018-04-10T14:54:38Z
• Authors: Mingfen Tuo; Chuan Xu; Haoran Mu; Xiaozhi Bao; Yingwei Wang; Si Xiao; Weiliang Ma; Lei Li; Dingyuan Tang; Han Zhang; Malin Premaratne; Baoquan Sun; Hui-Ming Cheng; Shaojuan Li; Wencai Ren; Qiaoliang Bao
• Keywords: Saturable absorption

Two-dimensional (2D) materials, such as graphene, transition metal dichalcogenides, and black phosphorus, have attracted intense interest for applications in ultrafast pulsed laser generation, owing to their strong light–matter interactions large optical nonlinearities. However, due the mismatch of bandgap, many these 2D materials are not suitable at near-infrared (NIR) waveband. Here, we report nonlinear properties α-Mo2C crystals usage a new broadband saturable absorber generation. It was found that excellent absorption terms largely tunable modulation depth very low saturation intensity. In addition, carrier dynamic results reveal an ultrashort intraband recovery time 0.48 ps 1.55 μm. By incorporating into either Er-doped or Yb-doped fiber laser, able generate pulses with stable operation central wavelengths 1602.6 1061.8 nm, respectively. Our experimental demonstrate can be promising media applications.