Abstract
Nonlinear spectral broadening based on self-phase modulation (SPM) is essential for achieving Mamyshev mode-locking. Changes in pulse shape due to dispersion, which indirectly affect single pulse energy and peak power, are also important factors influencing spectral broadening. However, this factor is often overlooked. Here, we investigated the impact of dispersion on pulse profile and spectral evolution through numerical simulations. By controlling the pump power and dispersion conditions within the cavity, we achieved noise-like self-starting mode-locking and reversible switching between noise-like pulses (NLPs) and single pulses in the MO using anomalous dispersion gain fiber, with signal-to-noise ratio (SNR) all exceeding 54 dB.
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Schedule a callMore From: Chaos, Solitons and Fractals: the interdisciplinary journal of Nonlinear Science, and Nonequilibrium and Complex Phenomena
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