Self-generated cooperative light emission induced by atomic recoil

Year: 2004

Authors: Javaloyes J., Perrin M., Lippi GL., Politi A.

Autors Affiliation: Institut Non Linéaire de Nice, UMR 6618 CNRS, Université de Nice-Sophia Antipolis, 1361 Route des Lucioles, 06560 Valbonne, France;
Istituto Nazionale di Ottica Applicata, Largo E. Fermi 6, 50125 Firenze, Italy

Abstract: The interaction of an atomic gas confined inside a cavity containing a strong electromagnetic field is numerically and theoretically investigated in a regime where recoil effects are not negligible. The spontaneous appearance of a density grating (atomic bunching) accompanied by the onset of a coherent, back-propagating electromagnetic wave is found to be ruled by a continuous phase transition. Numerical tests allow us to convincingly prove that the transition is steered by the appearence of a periodic atomic density modulation. Consideration of different experimental relaxation mechanisms induces us to analyze the problem in nearly analytic form, in the large detuning limit, using both a Vlasov approach and a Fokker-Planck description. The application of our predictions to recent experimental findings, reported by Kruse [Phys. Rev. Lett., 91 183601 (2003) ], yields a semiquantitative agreement with the observations.

Journal/Review: PHYSICAL REVIEW A

Volume: 70 (2)      Pages from: 23405-1  to: 23405-10

KeyWords: INDUCED RESONANCES; 2-LEVEL ATOMS; SODIUM VAPOR; RESONATOR;
DOI: 10.1103/PhysRevA.70.023405

Citations: 15
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