Self-pulsing in a Laser Model with Discrete Gain and Loss

Observation of Fibre Laser Instabilities Through Modulation of the Cavity Optical Length

“…A plausible explanation hinges on the prediction of spontaneous modelocking or self-pulsing [15] for multi-mode lasers with a homogeneously broadened line when p>9 ; this work has been extended to include the effects of finite transmission loss in [16] . Physically, the pulses are generated by coherent Rabi oscillations that induce spontaneous mode-locking [17,181 ; in simple terms, this occurs when the Rabi period TR equals the cavity round-trip time Tca,,, where TR = 21tV [T 1 T2 /(p -1)], T l is the decay time of the inversion and T 2 is the decay time of the polarization .…”