Berlin 2005 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe
Q: Quantenoptik und Photonik
Q 20: Poster Fallen & Kühlung
Q 20.6: Poster
Montag, 7. März 2005, 11:00–12:30, Poster HU
An evaporation-free approach to Bose Einstein Condensation of 87Rb — •Jörg Lange1, Peter Staanum1,2, Stephan Kraft1, Roland Wester1, and Matthias Weidemüller1 — 1Physikalisches Institut, Universität Freiburg, 79104 Freiburg — 2Institut für Quantenoptik, Universität Hannover, 30167 Hannover
Bose Einstein Condensation of 87Rb atoms in quasi-electrostatical dipole traps formed by a focussed CO2-laser beam has been demonstrated in recent experiments [1]. Due to the limited initial number of atoms in such dipole traps, the final atom number in the condensate which is achieved after evaporative cooling is usually quite low.
We present the current status of a new experiment, in which we combine a CO2-laser trap (λ=10.6 µm) with Raman sideband cooling [2] and a tightly focussed dipole trap at 1064 nm to produce a 87Rb-condensate without evaporation.
[1] M. D. Barrett et al., Phys. Rev. Lett. 87, 010404 (2001), G. Cennini et al., Phys.Rev. Lett. 91, 240408 (2003)
[2] A. J. Kerman et al., Phys. Rev. Lett. 84, 439 (2000)