Raman cooling of spin-polarized cesium atoms in a crossed dipole trap

H Perrin (1) , A Kuhn (1) , I Bouchoule (1) , T Pfau (1) , C Salomon (1)

1 TVES - Territoires, Villes, Environnement & Société - ULR 4477

We describe a Raman cooling scheme that allows for the simultaneous polarization and cooling of cesium atoms. Using efficient chirped Raman pulses, cesium atoms confined in a red-detuned crossed dipole trap are 80 % polarized and cooled to a temperature of 2.4 µK. After cooling, the phase-space density reaches 10^{−3} . We have strong evidence that this value is limited by multiple photon scattering within the atomic cloud.

Domaines: Physique Atomique [physics.atom-ph]

H Perrin, A Kuhn, I Bouchoule, T Pfau, C Salomon. Raman cooling of spin-polarized cesium atoms in a crossed dipole trap. EPL - Europhysics Letters, 1999, 46, pp.141 - 147. ⟨10.1209/epl/i1999-00236-0⟩. ⟨hal-01076493⟩