Abstract

Experiments are described that show that polarization of light in a vertical-cavity surface-emitting laser subjected to isotropic optical feedback can jump regularly back and forth between two orthogonal states when the injection current is increased. The polarization-resolved light-current characteristic curves are thus channeled. This effect occurs when the dichroism of the laser is weak enough to allow the effective (isotropic) reflectance to impose the polarization. A comparison of a model introduced by San Miguel et al. [Phys. Rev. A 52, 1728 (1995)] and the standard equations indicates that the best description is given when no spin relaxation is included.

© 1999 Optical Society of America

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