Abstract
A quasi-resonant interaction of two oppositely directed light waves with the Bose-Einstein condensate of sodium vapor is studied using a semiclassical model at higher (dressing) and lower (probe) frequencies. It is demonstrated that, under the experimental conditions, a single state with nonzero momentum that corresponds to the absorption of a dressing photon and the emission of a probe photon is populated. A variation in the experimental conditions, in particular, an increase in the dressing-wave intensity or a decrease in the detuning of its resonance from the electronic transition under study can lead to the excitation of other atomic states whose momenta are codirectional and represent multiples of the given one. The shape of the probe pulse is found for various conditions of its interaction with the dressed condensate.
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Shamrov, N.I. Interaction of a laser double beam with the Bose-Einstein condensate of rarefied atomic gases. Laser Phys. 17, 858–867 (2007). https://doi.org/10.1134/S1054660X07060126
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DOI: https://doi.org/10.1134/S1054660X07060126