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Coherent flash of light emitted by a cold atomic cloud

Abstract : When a resonant laser sent on an optically thick cold atomic cloud is abruptly switched off, a coherent flash of light is emitted in the forward direction. This transient phenomenon is observed due to the highly resonant character of the atomic scatterers. We analyze quantitatively its spatio-temporal properties and show very good agreement with theoretical predictions. Based on complementary experiments, the phase of the coherent field is reconstructed without interferometric tools.
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Contributor : David Wilkowski <>
Submitted on : Thursday, March 31, 2011 - 2:29:00 AM
Last modification on : Thursday, July 1, 2021 - 5:32:11 PM
Long-term archiving on: : Friday, July 1, 2011 - 2:33:11 AM


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  • HAL Id : hal-00581530, version 1
  • ARXIV : 1103.6098


Maryvonne Chalony, Romain Pierrat, Dominique Delande, David Wilkowski. Coherent flash of light emitted by a cold atomic cloud. 2011. ⟨hal-00581530⟩



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