Hysteresis of dissipative soliton molecules in mode-locked fiber lasers
We numerically demonstrate bistability of a robust dissipative soliton molecule with independently evolving phase in a normal dispersion mode-locked fiber laser. It is shown that the separation of the peaks exhibits a hysteretic behavior as a function of the pump energy. Physically this corresponds to the coexistence of two bound-state branches, one with chaotic dynamics and another one with periodic dynamics. The crucial role of gain saturation for the appearance of the hysteresis is revealed....[Show more]
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