Values of various parameters during the C-MOT stage

<p><b>Table 1.</b> Values of various parameters during the C-MOT stage. δ_<em>C</em>, δ_<em>R</em> are the cooling and repump detuning, <em>I_C</em>, <em>I_R</em> and <em>I_S</em> are the cooling, repump and the saturation intensity respectively.</p> <p><strong>Abstract</strong></p> <p>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 |<em>F</em> = 2, <em>m_F</em> = 2〉 state prior to loading into the hybrid trap. We also report a direct loading of ³⁹K atoms, prepared in the state |<em>F</em> = 1〉, into a single beam dipole trap.