Hamburg 2009 – scientific programme

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A: Fachverband Atomphysik

A 34: Poster II

A 34.44: Poster

Thursday, March 5, 2009, 16:30–19:00, VMP 9 Poster

Ultrashort pulse propagation in atomic Rubidium — •Wenjia Zhong¹, Christoph Marquardt¹, Ulrik L. Andersen², and Gerd Leuchs¹ — ¹MPI für die Physik des Lichts, Erlangen, Germany — ²Department of Physics, Technical University of Denmark, Lyngby, Denmark

We investigate the propagation of 130-fs laser pulses through high density atomic Rubidium vapor. We measure the pulse spectra using a high resolution spectrometer both for the laser on resonance of the Rb D₁ line and for the laser detuned such that the resonance frequency is in the wing of the pulse spectrum.

For pulse areas below π, the expected Lorentzian dip at the resonance frequency increases with the light intensity. At pulse areas above π, the behavior is more complicated. Its dependence on pulse detuning, absorption path length and the spatial mode is studied.