title: Nonperturbative analysis of Zeeman-coherence effects on resonant phase conjugation.
abstract: The effect of Zeeman coherence on phase conjugation is investigated in the saturation regime by using a nonperturbative analysis of resonant degenerate four-wave mixing with orthogonally polarized pump beams in a A-type homogeneously broadened three-level system. The dependence of the phase-conjugation efficiency on phase-interrupting collisions and pump imbalance is particularly studied. Significant phase-conjugate reflectivities can be obtained at pump intensities much below those required for a two-level system.
authors.forename: G P
authors.initials: GP
authors.lastname: Agrawal