Abstract
eld through the susceptibility (dependent on laser frequency and population inversion). We prove both analytically and numerically the possible existence of a phase unstable regime, characterized by a periodic oscillation of the optical frequency and a constant intensity. This regime bears close resemblance to the mode-switching behavior, with constant total output power, experimentally observed in semiconductor lasers. In addition, our model predicts the appearance of a phase- and amplitude-turbulent regime, compatible with experimental observations. Both regimes, never predicted up until now in laser physics, are well-known in uid dynamics under the name Benjamin-Feir instability.
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