Dynamic evolution of the dissipative soliton in passively mode-locked fiber laser based on black phosphorus as a new saturable absorber

Black phosphorus (BP) is a promising two dimensional (2D) material due to its electronic and optical properties. Hence, we use BP as a new saturable absorber in passively mode-locked (PML) fiber laser to generate dissipative solitons. Numerical simulations show that under the same conditions, the dissipative soliton generated by PML fiber laser based on BP as a saturable absorber has better physical properties than other 2D materials (such as graphene, transition metal dichalcogenides, topological insulators) as a saturable absorber. With the increase of pump power, dissipative soliton requires more pump power to split into multi-soliton, which means PML fiber laser using BP as a saturable absorber generates the dissipative soliton has high nonlinearity tolerance. According to this paper we can find that BP is an ideal saturable absorber and can be used for ultrashort optical pulse generation.