Multiplet cascade in a semiconductor laser with optoelectronic feedback
Résumé
We report experimentally and theoretically a dynamical scenario involving the formation of pulse multiplet structures, i.e., configurations of two, three, and more pulses per round trip, in a semiconductor laser with positive optoelectronic feedback. The delayed feedback loop includes a cascade of two band-limited amplifiers with nonlinear saturation of sigmoid type. The multiplets appear subcritically in the vicinity of the lasing threshold, resembling gain-switched operation, and evolve with the injection current.
Domaines
Science non linéaire [physics]
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Subthreshold_Multistability_and_Doublets_Dynamics_in_a_Semiconductor_Laser_with_Nonlinear_Time_Delayed_Optoelectronic_Feedback (1).pdf (3.61 Mo)
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