Dual-color Q-switched mode-locking in an Erbium-doped fiber laser

Abstract

Q-switched mode-locking (QML) has been widely observed in various lasers, but its generation mechanism in passive mode-locking remains unclear. In this paper, we build up a dual-color QML Erbium-doped fiber laser and find a bound-state-like envelope on the optical spectrum for the first time. Theoretically, the formation mechanism of QML is numerically investigated using the coupled Ginzburg-Landau equations. In addition, we demonstrated the existence of two QML pulse evolution patterns with gain or polarization state variations in simulation. Our results deepen the understanding of QML pulses in mode-locked fiber lasers and provide a foundation for studying mode-locking nonlinear evolutionary paths.

References in corpus (4)

• Mode-Locking of the Hermite-Gaussian Modes of a Nanolaser
• Collision-induced Hopf-type bifurcation reversible transitions in a dual-wavelength femtosecond fiber laser
• Pulse formation mechanisms switching in hybrid mode-locked fiber laser
• Dynamics of mode-locked nanolasers based on Hermite-Gaussian modes