Ground-state magneto-optical resonances in Cesium vapour confined in an extremely thin cell

Abstract

Experimental and theoretical studies are presented related to the ground-state magneto-optical resonance prepared in Cesium vapour confined in an Extremely Thin Cell (ETC, with thickness equal to the wavelength of the irradiating light). It is shown that the utilization of the ETC allows one to examine the formation of a magneto-optical resonance on the individual hyperfine transitions, thus distinguishing processes resulting in dark (reduced absorption) or bright (enhanced absorption) resonance formation. We report on an experimental evidence of the bright magneto-optical resonance sign reversal in Cs atoms confined in the ETC. A theoretical model is proposed based on the optical Bloch equations that involves the elastic interaction processes of atoms in the ETC with its walls resulting in depolarization of the Cs excited state which is polarized by the exciting radiation. This depolarization leads to the sign reversal of the bright resonance. Using the proposed model, the magneto-optical resonance amplitude and width as a function of laser power are calculated and compared with the experimental ones. The numerical results are in good agreement with the experiment.

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Cited by in corpus (5)

• Detailed studies of non-linear magneto-optical resonances at D1 excitation of Rb-85 and Rb-87 for partially resolved hyperfine F-levels
• Electromagnetically induced transparency resonances inverted in magnetic field
• Nonlinear magneto-optical resonances at D1 excitation of 85Rb and 87Rb in an extremely thin cell
• Relaxation mechanisms affecting magneto-optical resonances in an extremely thin cell: experiment and theory for the cesium D${}_1$ line
• Implementation of a double-scanning technique for studies of the Hanle effect in Rubidium vapor