Article Dans Une Revue Physical Review Letters Année : 2001

Slow group velocity and Cherenkov radiation

M. Artoni
  • Fonction : Auteur
G. La Roca
  • Fonction : Auteur
F. Bassani
  • Fonction : Auteur

Résumé

We theoretically study the effect of ultraslow group velocities on the emission of Vavilov-Cherenkov radiation in a coherently driven medium. We show that in this case the aperture of the group cone on which the intensity of the radiation peaks is much smaller than that of the usual wave cone associated with the Cherenkov coherence condition. We show that such a singular behaviour may be observed in a coherently driven ultracold atomic gas.

Dates et versions

hal-00002130 , version 1 (18-06-2004)

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Iacopo Carusotto, M. Artoni, G. La Roca, F. Bassani. Slow group velocity and Cherenkov radiation. Physical Review Letters, 2001, 87, pp.064801. ⟨hal-00002130⟩
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