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Dynamics of Multimodel Semiconductor Lasers

Yacomotti, A.; Furfaro, L.; Hachair, X.; Pedaci, F.; Giudici, M.; Tredicce, J.; Javaloyes, J.; Balle, S.; Viktorov, E.A.; Mandel, P.
Physical Review A. 69, 053816 (1-9) (2004)

We analyze multi-longitudinal-mode semiconductor lasers experimentally. We show that the intensity of each mode displays large amplitude oscillations but obeys a highly organized antiphase dynamics leading to an almost constant total intensity output. For each mode, regular switching is observed in the megahertz range, while the optical frequency as a function of time follows a well defined sequence from blue to red. Using a multimode theoretical model, we identify that four-wave mixing is the dominant mechanism at the origin of the observed dynamics. The asymmetry of the susceptibility function of semiconductor materials allows us to explain the optical frequency sequence.