Hanle effect in coherent backscattering.
We study the shape of the coherent-backscattering (CBS) cone obtained when resonant light illuminates a thick cloud of laser-cooled rubidium atoms in the presence of a homogenous magnetic field. We observe new magnetic field-dependent anisotropies in the CBS signal. We show that the observed behavior is due to the modification of the atomic-radiation pattern by the magnetic field (Hanle effect in the excited state).
Labeyrie
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Laboratoire Ondes et Désordre, FRE 2302 CNRS, 1361 route des Lucioles, F-06560 Valbonne, France.
Miniatura
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Müller
C A
CA
Sigwarth
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O
Delande
D
D
Kaiser
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R