The emission and stability properties of a plane-wave model of intracavity
degenerate four-wave mixing including self- and cross-phase modulation are
studied. A Kerr medium inside an anisotropic cavity in which a linearly pol
arized field is injected is considered. Cavity anisotropy leads to qualitat
ive new phenomena such as a subcritical polarization instability. (C) 2000
Elsevier Science B.V. All rights reserved.