Fig. 1. Characterization of the MoS₂ SA. (a) Absorption spectrum; (b) Raman spectrum; (c) SEM image; (d) AFM image

Fig. 2. MoS₂ absorption characteristic. (a) Transmission spectrum of the MoS₂ SA; (b) nonlinear transmission measurements of the MoS₂ SA

Fig. 3. Experimental layout of the mode-locked laser based on MoS₂ SA

Fig. 4. Relationship curve between average output power and absorbed pump power

Fig. 5. Pulse sequence of the mode-locked at (a) 1 ms/div time scale and (b) 20 ns/div time scale under the absorbed pump power of 4 W

Fig. 6. Spectrum of the mode-locked laser

Fig. 7. Laser output spectrogram and autocorrelation curve. (a) Output laser spectra of CW and mode-locked operation under the absorbed pump power of 4 W; (b) autocorrelation signal of the mode-locked pulse