%0 Figure %A Nath, Dipankar %A Kollengode Easwaran, R %A Rajalakshmi, G %A S Unnikrishnan, C %D 2013 %T Aspect ratio as a function of power %U https://iop.figshare.com/articles/figure/_Aspect_ratio_as_a_function_of_power/1012326 %R 10.6084/m9.figshare.1012326.v1 %2 https://iop.figshare.com/ndownloader/files/1480148 %K magnitude reduction %K thermalization time %K mot %K trap beam %K 39 K %K 39 K atoms %K Atomic Physics %K Molecular Physics %X

Figure 3. Aspect ratio as a function of power.

Abstract

We report the rapid accelerated thermalization of potassium (39K) atoms loaded in a magnetic trap, in the presence of a single dipole trap beam. More than an order of magnitude reduction in the thermalization time, to less than a second, is observed with the focused off-resonant beam occupying only 0.01% of the volume of the magnetic trap. A new method for testing for thermalization of relatively hot clouds is devised. The cold atoms are loaded from a magneto-optical trap (MOT) of 39K that has gone through a compressed MOT and sub-Doppler cooling stage. The atoms are prepared in the magnetically stretched |F = 2, mF = 2〉 state prior to loading into the hybrid trap. We also report a direct loading of 39K atoms, prepared in the state |F = 1〉, into a single beam dipole trap.

%I IOP Publishing