Journal
OPTICS LETTERS
Volume 47, Issue 7, Pages 1750-1753Publisher
Optica Publishing Group
DOI: 10.1364/OL.454038
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Funding
- Key-Area Basic and Applied Basic Research Foundation of Guangdong Province [2018B090904003, 2020B090922006]
- National Natural Science Foundation of China [62175069, 11874018, 11974006, 61805084, 61875058]
- Guangdong Basic and Applied Basic Research Foundation [2019A1515010879, 2021A1515012315]
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This numerical investigation explores the pulsating dynamics of pure-quartic solitons (PQSs) in a passively mode-locked fiber laser. The results reveal that the PQS can alternate between stable single soliton and pulsating regimes multiple times, attributed to an imperfect counterbalance between self-phase modulation and fourth-order dispersion-induced phase shifts. Additionally, soliton creeping behavior and wavelength shifts are observed during the pulsating process.
We numerically investigate the pulsating dynamics of pure-quartic solitons (PQSs) in a passively mode-locked fiber laser. The bifurcation diagrams show that the PQS can alternate between the stable single soliton and pulsating regimes multiple times before transiting into the chaotic state. This multi-alternation behavior can be attributed to energy redistribution across the central part and the oscillating tails of the PQS, which is caused by an imperfect counterbalance between self-phase modulation (SPM)-induced and fourth-order dispersion (FOD)-induced phase shifts. Soliton creeping behavior can be observed during the pulsating process, accompanied by periodic asymmetric temporal profiles and central wavelength shifts of the PQS. These findings give new insights into the dynamics of PQSs in fiber lasers. (C) 2022 Optica Publishing Group
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