Over the last three decades, optical phase conjugation (OPC) has been one of the major
research subjects in the field of nonlinear optics and quantum electronics. OPC defines …

We report the observation of transient Bragg diffraction by an optical-pumping-transferred
ground-state population grating in cold cesium atoms confined in a magneto-optical trap …

Transient four-wave mixing signals were observed in cold sodium atoms. This phenomenon
is interpreted as Bragg diffraction of a probe pulse by a population grating of the ground …

First experimental investigations are reported on nonlinear beam shaping due to the
interaction between an intense laser beam and a cloud of laser cooled rubidium atoms …

Optical-pumping-induced population-grating transfer between hyperfine levels of the cesium
D 2 line is observed through four-wave mixing in a sample of cold atoms. Diffraction …

We have investigated degenerate four-wave mixing in a sample of cold rubidium atoms. A
red-blue asymmetry is observed for high intensities of the pumping beams. This asymmetry …

Two-photon cooperative absorption is common in solid-state physics. In a sample of trapped
cold atoms, this effect may open up new possibilities for the study of nonlinear effects. The …

We report on our studies of atoms contained in a magneto-optical trap using the nonlinear
spectroscopy methods. Absorption and four-wave mixing signals are recorded for the probe …

We have monitored the third and the fifth order nonlinear susceptibilities of cold cesium
atoms confined in a magneto-optical trap through the observation of Bragg diffraction into a …

We investigated coherent transient oscillations in the transmission intensity of a frequency-
modulated probe-laser beam through a sample of trapped atoms. The transients occur when …