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Atomic, Molecular, Optical and Plasma Physics
Eur. Phys. J. D 1, 53-56

Spontaneous light scattering from propagating density fluctuations in an optical lattice

C. Jurczak - J.-Y. Courtois - B. Desruelle - C.I. Westbrook - A. Aspect

Institut d'Optique, BP 147, 91403 Orsay cedex, France

Received: 30 January 1997 / Accepted: 9 October 1997

Abstract
We report the observation of resonances in the intensity correlation spectra of a 3D rubidium optical lattice, which we attribute to light scattering from propagating atomic density fluctuations in the lattice. This process is the spontaneous analog of the stimulated scattering mechanism recently described by Courtois et al.. We investigate the dependence of the new resonances on the lattice angle and show that they disappear for large angles, thus resolving previous discrepancies on the subject.

PACS
32.80.Lg Mechanical effects of light on atoms, molecules, and ions - 32.80.Pj Optical cooling of atoms; trapping - 33.50.Dq Fluorescence and phosphorescence spectra

Author for correspondance: jurczak@physique.ens.fr


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