Physics – Atomic Physics
Scientific paper
2010-09-07
Physics
Atomic Physics
Minor changes according to the recommendations of the referee: - Corrected Fig.1. - Split the graph of Fig.6 for clarity. - Ad
Scientific paper
We use two-laser optical pumping on a continuous atomic fountain in order to prepare cold cesium atoms in the same quantum ground state. A first laser excites the F=4 ground state to pump the atoms toward F=3 while a second pi-polarized laser excites the F=3 -> F'=3 transition of the D2 line to produce Zeeman pumping toward m=0. To avoid trap states, we implement the first laser in a 2D optical lattice geometry, thereby creating polarization gradients. This configuration has the advantage of simultaneously producing Sisyphus cooling when the optical lattice laser is tuned between the F=4 -> F'=4 and F=4 -> F'=5 transitions of the D2 line, which is important to remove the heat produced by optical pumping. Detuning the frequency of the second pi-polarized laser reveals the action of a new mechanism improving both laser cooling and state preparation efficiency. A physical interpretation of this mechanism is discussed.
Devenoges Laurent
Domenico Gianni Di
Dumas Claire
Thomann Pierre
No associations
LandOfFree
Combined quantum state preparation and laser cooling of a continuous beam of cold atoms does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Combined quantum state preparation and laser cooling of a continuous beam of cold atoms, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Combined quantum state preparation and laser cooling of a continuous beam of cold atoms will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-704948