10.6084/m9.figshare.1012328.v1 Dipankar Nath Dipankar Nath R Kollengode Easwaran R Kollengode Easwaran G Rajalakshmi G Rajalakshmi C S Unnikrishnan C S Unnikrishnan (a) Absorption image of a single beam dipole trap IOP Publishing 2013 atom number magnitude reduction thermalization time mot trap beam 39 K atoms 39 K Absorption image Atomic Physics Molecular Physics 2013-07-30 00:00:00 Figure https://iop.figshare.com/articles/figure/_a_Absorption_image_of_a_single_beam_dipole_trap/1012328 <p><strong>Figure 5.</strong> (a) Absorption image of a single beam dipole trap. (b) Atom number in single beam dipole trap as a function of power.</p> <p><strong>Abstract</strong></p> <p>We report the rapid accelerated thermalization of potassium (<sup>39</sup>K) 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 <sup>39</sup>K that has gone through a compressed MOT and sub-Doppler cooling stage. The atoms are prepared in the magnetically stretched |<em>F</em> = 2, <em>m<sub>F</sub></em> = 2〉 state prior to loading into the hybrid trap. We also report a direct loading of <sup>39</sup>K atoms, prepared in the state |<em>F</em> = 1〉, into a single beam dipole trap.</p>