München 2004 – wissenschaftliches Programm
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Q: Quantenoptik und Photonik
Q 40: Laserspektroskopie
Q 40.7: Vortrag
Donnerstag, 25. März 2004, 18:00–18:15, HS 204
Slow light by means of spectral hole burning in atomic vapor — •Jürgen Appel and Alexander I. Lvovsky — Fachbereich Physik M559, Universität Konstanz
In a Doppler-free spectroscopy setup a rubidium vapor cell is subjected to two counterpropagating laser beams. The saturating beam creates narrow spectral holes (of approximately the natural linewidth) in the weaker signal beam’s Doppler-broadened absorption spectrum. A strong dispersion leads to a large reduction of the signal pulse’s group velocity at the transmission peaks and negative group velocities at their edges. Group indices of order 103 with less than 70% absorption have been obtained.