title: Hanle effect in coherent backscattering.
abstract: 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).
authors.affiliation: Laboratoire Ondes et Désordre, FRE 2302 CNRS, 1361 route des Lucioles, F-06560 Valbonne, France.
authors.forename: G
authors.initials: G
authors.lastname: Labeyrie
authors.forename: C
authors.initials: C
authors.lastname: Miniatura
authors.forename: C A
authors.initials: CA
authors.lastname: Müller
authors.forename: O
authors.initials: O
authors.lastname: Sigwarth
authors.forename: D
authors.initials: D
authors.lastname: Delande
authors.forename: R
authors.initials: R
authors.lastname: Kaiser