Options
Laser collimation of a continuous beam of cold atoms using Zeeman-shift degenerate-Raman-sideband cooling
Auteur(s)
Castagna, N.
Taichenachev, A. V.
Yudin, V. I.
Date de parution
2004
In
Physical Review A, American Physical Society (APS), 2004/69/063403/1-9
Résumé
In this article we report on the use of degenerate-Raman-sideband cooling for the collimation of a continuous beam of cold cesium atoms in a fountain geometry. Thanks to this powerful cooling technique we have reduced the atomic beam transverse temperature from 60 μK to 1.6 μK in a few milliseconds. The longitudinal temperature of 80 μK is not modified. The flux density, measured after a parabolic flight of 0.57 s, has been increased by a factor of 4 to approximately 107 at. s<sup>−1</sup> cm<sup>−2</sup> and we have identified a Sisyphus-like precooling mechanism which should make it possible to increase this flux density by an order of magnitude.
Identifiants
Type de publication
journal article