Diffusing-Wave Spectroscopy of Cold Atoms in Ballistic Motion
Atomic Physics
2018-01-10 v2
Abstract
Diffusing-wave spectroscopy is a powerful technique which consists in measuring the temporal correlation function of the intensity of light multiply scattered by a medium. In this paper, we apply this technique to cold atoms under purely ballistic motion and we investigate the transition between the single and the multiple scattering regime. The intensity correlation function changes from a simple Gaussian function, whose width reveals the sample temperature, to a more complex decay shortened by the frequency redistribution in the thick cloud. These features are quantitatively compared to simulations with a phase-coherent and an incoherent model. Both show a very good agreement with the experiments.
Cite
@article{arxiv.1710.03974,
title = {Diffusing-Wave Spectroscopy of Cold Atoms in Ballistic Motion},
author = {Aurélien Eloy and Zhibin Yao and Romain Bachelard and William Guerin and Mathilde Fouché and Robin Kaiser},
journal= {arXiv preprint arXiv:1710.03974},
year = {2018}
}