Kavli Affiliate: Jia Liu
| First 5 Authors: Changqing Li, Changqing Li, , ,
| Summary:
Mamyshev oscillators (MOs), a novel class of passively mode-locked fiber
lasers, serve as an excellent platform to explore complex nonlinear dynamics,
ranging from localized structures to chaos. Despite their versatility,
achieving self-starting mode-locking remains a significant challenge. In this
study, we unveil the critical role of the dissipative Faraday instability (DFI)
in facilitating the self-starting process of MOs, where the DFI triggers the
symmetry breaking of the homogeneous solution to overcome the initiation
barriers. A panoramic view of several distinct operational regimes with
distinct DFI patterns is provided, namely the non-self-starting states, the
irregular patterns, the harmonic mode locking regime, the stable single pulse
and the stable multi pulse regime. For the lattest case, we uncover the origins
of randomness in these pulse sequences through analyzing the causality between
the timing of the random pulses and the initial seeding conditions. Building
upon these findings, we propose the novel time-injection locking technique to
customize the temporal locations of the pulses as well as the pattern timing in
MOs, thus demonstrating its potential for applications in all-optical data
storage and tunable ultrashort pulse sources.
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