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Pulsating dynamics in a pure-quartic soliton fiber laser
Optics Letters
|April 1, 2022
Summary
Pure-quartic solitons (PQSs) in fiber lasers exhibit complex pulsating dynamics, alternating between stable and chaotic states due to energy redistribution. This study reveals multi-alternation behavior and soliton creeping in PQSs.
Area of Science:
- Nonlinear optics
- Fiber laser physics
Background:
- Pure-quartic solitons (PQSs) are a unique class of optical solitons.
- Understanding their dynamics in passively mode-locked fiber lasers is crucial for laser design.
Purpose of the Study:
- To numerically investigate the pulsating dynamics of PQSs in a fiber laser.
- To elucidate the mechanisms behind multi-alternation behavior and soliton creeping.
Main Methods:
- Numerical simulations of PQS dynamics.
- Bifurcation analysis to map different dynamical regimes.
- Analysis of energy redistribution and phase shifts.
Main Results:
- PQSs exhibit multiple alternations between stable and pulsating regimes before chaos.
- Multi-alternation is linked to imperfect SPM/FOD phase shift balance and energy redistribution.
- Soliton creeping, asymmetric profiles, and wavelength shifts are observed during pulsation.
Conclusions:
- The study provides new insights into the complex dynamics of PQSs in fiber lasers.
- Findings highlight the role of energy redistribution and phase modulation interplay.
- Understanding these dynamics is key for controlling PQS behavior in laser systems.
