Collision-enhanced resonance of laser-diode-excited Cs in a buffer gas

Abstract

We report an experimental investigation of the Cs D₂ line-shape changes due to laser-induced optical pumping and collisions in a buffer gas. A model dealing with the population of the ground-state hyperfine levels, the pressure broadening in the presence of Ne, and the diffusion of the atoms outside the laser beam describes well the complex line shapes.