DYNAMIC INDEPENDENCE OF PULSED ANTIPHASED MODES

We analyze theoretically a case of antiphase dynamics in the self-pulsing regime involving two orthogonal polarizations in intracavity second-harmonic generation. We show that, for this model, antiphase dynamics may lead to a nonreciprocal independence of the two polarizations as a result of partial overlap between the pulses. In the case in which two modes oscillate with one polarization and a single mode oscillates with orthogonal polarization, we find that the two modes can display chaos while the orthogonal mode remains periodic, despite coupling among all the modes.