Phase properties of two-mode optical fields with Stark shift and Kerr nonlinearity

The influence of Stark shift on the phase properties when an ideal cavity i s filled with a Kerr-like medium and coupling is effected through nondegene rate Raman two-photon processes is studied. This has been carried out using the Hermitian phase formalism of Pegg and Barnett. We find that the phase properties of the field reflect the collapses and revivals of the level occ upation probabilities in most situations. The interaction brings about the symmetrical splitting of the phase probability distribution. A number of in teresting features are found and discussed.