Spontaneously excited pulses in an optically driven semiconductor laser

The intrinsic quantum noise such as spontaneous emission and shot noise which were capable of exciting intensity multipulses from steady state operation in optically injected semiconductor lasers was described. The noisy lasers produced pulses where they exhibited self-pulsations in locking region of corresponding deterministic system. The regions of single-, double- and triple-pulse excitability were identified in interpulse time statistics near k-homoclinic bifurcations. These statistics were used to characterize regions of different multipulse excitability in laser device.