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Article Dans Une Revue Journal of Physics B: Atomic, Molecular and Optical Physics Année : 2011

Optical non-linearity in a dynamical Rydberg gas

J. D. Pritchard
  • Fonction : Auteur
K. J. Weatherill
  • Fonction : Auteur
C. S. Adams
  • Fonction : Auteur

Résumé

We use the technique of electromagnetically induced transparency (EIT) to probe the effect of attractive dipole-dipole interactions in a highly excited Rydberg gas. The transient character of the EIT response is investigated by rapidly scanning the probe laser through resonance. We characterize the resulting cooperative optical non-linearity as a function of probe strength, density and scan direction. For the 58D5/2 Rydberg state, an atom density of 1.6 × 1010cm−3 and a positive frequency scan we measure a third-order non-linearity of χ(3) = 5 × 10−7 m2V−2. For the reverse scan we observe a second order non-linearity of χ(2) = 5 × 10−6 mV−1. The contrasting behaviour can be explained in terms of motional effects and resonant excitation of Rydberg pairs.

Dates et versions

hal-00916312 , version 1 (10-12-2013)

Identifiants

Citer

J. D. Pritchard, Alexandre Gauguet, K. J. Weatherill, C. S. Adams. Optical non-linearity in a dynamical Rydberg gas. Journal of Physics B: Atomic, Molecular and Optical Physics, 2011, 44 (18), pp.184019. ⟨10.1088/0953-4075/44/18/184019⟩. ⟨hal-00916312⟩
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