Velocity distribution control of cesium atoms by frequency modulated diodelaser

A simple control method for the velocity distribution of cesium atoms is de monstrated using a frequency modulated diode laser with a wider spectrum. C urrent to the diode laser was modulated and the laser spectrum was broadene d to overlap the Doppler broadening of the atomic beam. The reduction of th e atom velocity was achieved on the basis of the laser cooling technique an d a single narrow peak at approximately 45 m/s was observed. From a view po int of a novel purification process, the possibility to deflect this cooled cesium atomic beam was discussed to spatially separate the beam from impur ities.