%0 Journal Article
%T Enhanced Raman sideband cooling of caesium atoms in a vapour-loaded magneto-optical trap
%A Y. Li
%A J. Wu
%A G. Feng
%A J. Nute
%A S. Piano
%A L. Hackermuller
%A J. Ma
%A L. Xiao
%A S. Jia
%J Physics
%D 2015
%I arXiv
%R 10.1088/1612-2011/12/5/055501
%X We report enhanced three-dimensional degenerated Raman sideband cooling (3D DRSC) of caesium (Cs) atoms in a standard single-cell vapour-loading magneto-optical trap. Our improved scheme involves using a separate repumping laser and optimized lattice detuning. We load $1.5 \times 10^7$ atoms into the Raman lattice with a detuning of -15.5 GHz (to the ground F = 3 state). Enhanced 3D DRSC is used to cool them from 60 $\mu$K to 1.7 $\mu$K within 12 ms and the number of obtained atoms is about $1.2 \times 10^7$. A theoretical model is proposed to simulate the measured number of trapped atoms. The result shows good agreement with the experimental data. The technique paves the way for loading a large number of ultracold Cs atoms into a crossed dipole trap and efficient evaporative cooling in a single-cell system.
%U http://arxiv.org/abs/1503.05952v1