Abstract
The resonance-radiation-pressure effect induced by a broadband long-cavity dye laser has been observed on sodium vapor confined in a capillary cell. The diffusion of the vapor has been studied as a function of laser intensity and vapor density, and the induced drift velocity has been measured. The time evolution of the vapor density is in agreement with the theoretical model under the hypothesis of optimized laser-vapor coupling. The drift velocity and the diffusion coefficient are shown instead to be larger than predicted, indicating an incomplete thermalization of the atoms at the cell walls.
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