Light-induced-drift stationary states

Abstract
The light-induced-drift (LID) effect has been experimentally studied in specially coated capillary cells which manifest a negligible atom-wall interaction. This property permits a rapid evolution of LID and makes possible an experimental study of the stationary states as a function of different laser tunings and laser power densities. The light-induced density profile along the major axis of the cell has been analyzed. The experimental features are qualitatively reproduced by a two-level theory.