Superradiant light scattering and grating formation in cold atomic vapours

Details Superradiant light scattering and grating formation in cold atomic vapours Superradiant light scattering and grating formation in cold atomic vapours

2000-06-08

arxiv.org/abs/cond-mat/0006135v1

Physics

Condensed Matter

submitted to Optics Communications, LaTex version, 2 postscript figures

Scientific paper

A semi-classical theory of coherent light scattering from an elongated sample of cold atoms exposed to an off-resonant laser beam is presented. The model, which is a direct extension of that of the collective atomic recoil laser (CARL), describes the emission of two superradiant pulses along the sample's major axis simultaneous with the formation of a bidimensional atomic grating inside the sample. It provides a simple physical picture of the recent observation of collective light scattering from a Bose-Einstein condensate [S. Inouye et al., Science N.285, p. 571 (1999)]. In addition, the model provides an analytical description of the temporal evolution of the scattered light intensity which shows good quantitative agreement with the experimental results of Inouye et al.

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