(1) Department of Physics, State University of New York at Buffalo, Buffalo, New York 14260-1500, USA, US
Abstract:
Nonlinear optical response of a thin layer of rarefied atomic vapor is examined by taking into account the atomic motion as
well as collisions with the cell walls. Extraordinary pattern of self-diffraction spectrum due to the transient polarization
is predicted. It is shown that the spectra are Doppler free and depend strongly upon the vapor thickness. A new possibility
of signal enhancement is revealed and a simple device is suggested to enhance greatly the nonlinear reflection signal from
a resonant vapor layer.
Received: 3 July 1997/Accepted: 5 December 1997