We describe an operating regime for passively mode-locked quantum dot diode laser where the output consists of a train of dark pulses, i.e., intensity dips on a continuous background. We show that a dark pulse train is a solution to the master equation for mode-locked lasers. Using simulations, we study stability of the dark pulses and show they are consistent with the experimental results.
Citation: Optics Express
Pub Type: Journals
quantum dot, diode laser, mode-locked lasers, dark pulses, pulse propagation, temporal solitons