Spatio-temporal dynamics of conventional soliton and breathing soliton in an anomalous dispersion fiber laser

Abstract

The evolutions of conventional soliton (CS) and breathing soliton (BS) dynamics in an anomalous dispersion Er-doped fiber laser are investigated experimentally and numerically. Based on the dispersive Fourier transform technique, the evolution processes of CS buildup and extinction are observed and discussed. It was found that a transitional unstable stage exists during the buildup and extinction process. In the same laser, BS state is also reached. Simulation results of CS and BS evolutionary dynamics are anastomotic with experimental results. The results may contribute to better understanding of the complex pulse dynamics in ultrafast fiber lasers.

Build-up dynamics of different pulse types in a dispersion-managed Yb-doped fibre laser

“…Therefore, state 3 has the longest unstable mode-locking time in normal dispersion. In the negative dispersion regime, the build-up process of state 4 is similar with conventional soliton generated in Er-doped fibre laser [21]. Compared with three states in the positive dispersion regime, state 4 has more complex evolutionary processes in the unstable mode-locking time, including fluctuations and central wavelength drift.…”

Real‐Time Investigation of Ultrafast Dynamics through Time‐Stretched Dispersive Fourier Transform in Mode‐Locked Fiber Lasers

“…A similar extinction dynamic of S-MLFL was observed, which reveals that the extinction process could be speeded up by blocking the pump power at a faster speed. [45] Figure 5b illustrates the realtime spectral evolution dynamics for the birth and extinction of a soliton. The white box indicates the beating dynamics where the strong Q-ML laser spike occurs prior to the formation of stable mode-lock laser stage.…”