Abstract

We have studied the amplification of a single-mode electromagnetic field by an atomic system with a three-level cascade structure in two-photon resonance conditions when the top and bottom levels are mixed coherently by a strong external resonant field. We find different kinds of phase-sensitive amplification for different values of the driving field strength. For a very high driving field and near one-photon resonance, the system approaches an ideal parametric amplifier.

© 1990 Optical Society of America