Abstract
Periodic, chaotic and nearly square-wave switching of the two modes of a bidirectional ring laser were recently reported for a model suitable for laser materials for which the polarization can be adiabatically eliminated /1/. We have discovered that important dynamical behavior is played by the frequencies of the modes which show both slow evolution during the pulses and also abrupt switchings /2/. Even when the two single mode (unidirectional) steady state solutions have the same laser frequency which is independent of intensity or excitation, dynamical pulsations create dispersive effects which break the symmetry of the two modes in their frequencies as well as in their intensities.
© 1988 Optical Society of America
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