Dissipative soliton molecules with independently evolving or flipping phases in mode-locked fiber lasers

Aleksandr Zavyalov*, Rumen Iliew, Oleg Egorov, Falk Lederer

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    123 Citations (Scopus)

    Abstract

    We numerically demonstrate the existence of a discrete family of robust dissipative soliton bound state solutions (soliton molecules) in a mode-locked fiber laser with an instantaneous saturable absorber in the normal dispersion domain. For a certain domain of the small-signal gain, we obtain a robust first-level bound state with almost constant separation where the phase of the two pulses evolves independently. Moreover, their phase difference can evolve either periodically or chaotically depending on the small-signal gain. Interestingly, higher level bound states exhibit a fundamentally different dynamics. They represent oscillating solutions with a phase difference alternating between zero and π. We identify the crucial role of the linear gain saturation for the existence of these robust molecules independently of their level.

    Original languageEnglish
    Article number043829
    JournalPhysical Review A - Atomic, Molecular, and Optical Physics
    Volume80
    Issue number4
    DOIs
    Publication statusPublished - 22 Oct 2009

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