Dynamics of soliton types transition in pure-quartic soliton laser

Hanyang Shen, Rui Zhou and Zuxing Zhang

Chaos, Solitons & Fractals, 2024, vol. 185, issue C

Abstract: The generation of pure-quartic solitons (PQS) based on fourth-order dispersion (FOD) has garnered considerable attention recently owing to its potential of substantial energy enhancement for ultra-short pulses. Concurrently, the distinctive equilibrium mechanisms of PQS present an ideal platform for investigating nonlinear dynamics. Here, we take a PQS laser model to study the unique evolution of PQS under non-equilibrium conditions numerically. Our findings reveal that by meticulously controlling the intracavity FOD at the boundary between stable dissipative PQS (DPQS) and traditional PQS (TPQS), the laser exhibits fascinating transition dynamics between these two soliton types. For one thing, the DPQS explosion instigated by the oscillating tails of the pulse near the mode-locking threshold can recover to the TPQS. For another, the energy exchange and pulse interactions induced by the collapse of the breathing DPQS can reconstitute the pulses into the TPQS. Our results provide insights into the unique dynamical evolution in fiber lasers dominated by higher-order dispersion.

Keywords: Pure-quartic soliton; Nonlinear dynamics; Soliton types; Fiber laser (search for similar items in EconPapers)
Date: 2024
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Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:chsofr:v:185:y:2024:i:c:s0960077924006623

DOI: 10.1016/j.chaos.2024.115110

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