Heating or cooling collisionally aided fluorescence

E. Giacobino, P. R. Berman

Gerard Nienhuis, F. Schuller

Yoshiharu Maeno Yoshiharu Maeno, Maki Tachikawa, Yoshiki Moriwaki +1 more

We establish a theoretical model which quantitatively describes the dynamics of laser cooled ions confined in a radio-frequency (rf) trap. In our model the laser cooling efficiency and the rate of collisional radio-frequency (rf) heating are explicitly formulated. Considering the balance between these two effects, the ion temperature is determined at each trap parameter. This model precisely reproduces the laser-induced-fluorescence (LIF) line profile observed for 24 Mg+ ions.

E. Giacobino, M. Tawil, P. R. Berman +2 more

Collisionally aided radiative excitation of atoms using a laser detuned to the blue is shown to lead to heating of the external degrees of freedom. The velocity distribution of the excited atoms is studied experimentally and compared with theoretical predictions.

Kevin E. Strecker, David W. Chandler

Serge Reynaud, Claude N. Cohen-Tannoudji