Frankfurt 2006 – wissenschaftliches Programm

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SYRT: Radiation transport in random media

SYRT 2: Radiation transport in random media II

SYRT 2.3: Hauptvortrag

Freitag, 17. März 2006, 15:00–15:30, HVI

Transport of near-resonant light in cold atomic vapors — •Guillaume Labeyrie — Institut Non Linéaire de Nice, CNRS / UMR 6618, F-06560 Valbonne, France

Ultracold atomic vapors constitute attractive new samples to study the transport of light in disordered media. Among the most remarkable features of these gases are the very sharp resonances, the monodispersivity and absence of defects or absorption. I will review our work on both incoherent and coherent signatures of the transport in our atomic clouds, which are currently in the weak localization regime. In particular, I will show how coherent backscattering allowed us to identify several mechanisms which limit the phase coherence length in such samples. I will conclude with some prospects on the route to the strong localization regime.