Polarization dependence of four-wave mixing in a degenerate two-level system - art. no. 013805

Nearly degenerate four-wave mixing (NDFWM) within a closed degenerate two-l evel atomic transition is theoretically and experimentally examined. Using the model presented by Lezama er at [Phys. Rev. A 61, 013801 (2000)] the ND FWM spectra corresponding to different pump and probe polarization cases ar e calculated and discussed. The calculated spectra are compared to the obse rvation of NDFWM within the 6S(1/2)(F = F)-->6P(3/2)(F = 5) transition of c esium in a phase conjugation experiment using magneto-optically cooled atom s.