@Article{Supelec657,
author = {Lukasz Olejniczak and Krassimir Panajotov and Hugo Thienpont and Marc Sciamanna},
title = {{Self-pulsations and excitability in optically injected quantum-dot lasers: Impact of the excited states and spontaneous emission noise}},
journal = {Physical Review A},
year = {2010},
volume = {82},
pages = {023807},
doi = {10.1103/PhysRevA.82.023807},
abstract = {We study the dynamics of an optically injected quantum-dot laser
accounting for excited states. Mapping of the bifurcations in
the plane frequency detuning vs. injection strength shows that
the relaxation rate scales the regions of locking and single-
and double-period solutions, while the capture rate has a minor
effect. Within the regions of time-periodic solutions, close to
the saddle-node bifurcation boundary, we identify subregions
where the output signal resembles excitable pulses as a result
of the bottleneck phenomenon. We show that such emission is
determined mainly by fluctuations in the occupation of the
excited states. The interpulse time follows an inverse square
root scaling law as a function of the detuning. In a
deterministic system the pulses are periodic regardless of the
detuning, but in the presence of noise, close to the locking
region, the interpulse time follows a positively skewed normal
distribution. For a fixed frequency detuning, increasing the
noise strength can shift the mean of the interpulse time
distribution and make the pulsations more periodic.}
}