In an all-diode-laser experiment, cesium atoms in a gas cell are trapped and pre-cooled to approx.5 μK in a magneto-optical trap followed by optical molasses. We were able to cool about 20% of the pre-cooled atoms into a narrow Gaussian velocity distribution with vrms = 1.9 mm/s = vrec/ 2. This corresponds to a one-dimensional temperature of 27 nK. Our Monte Carlo simulations indicate that velocities well below vrec should be attainable in this case as well in less than 40 ms.
One-dimensional Raman cooling of cesium: towards the nanoKelvin / J. Reichel; O. Morice; G. M. Tino; C. Salomon. - STAMPA. - (1994), pp. 193-193. (Intervento presentato al convegno Proceedings of the 5th European Quantum Electronics Conference tenutosi a Amsterdam, Neth nel 28 August 1994 through 2 September 1994).
One-dimensional Raman cooling of cesium: towards the nanoKelvin
TINO, GUGLIELMO MARIA;
1994
Abstract
In an all-diode-laser experiment, cesium atoms in a gas cell are trapped and pre-cooled to approx.5 μK in a magneto-optical trap followed by optical molasses. We were able to cool about 20% of the pre-cooled atoms into a narrow Gaussian velocity distribution with vrms = 1.9 mm/s = vrec/ 2. This corresponds to a one-dimensional temperature of 27 nK. Our Monte Carlo simulations indicate that velocities well below vrec should be attainable in this case as well in less than 40 ms.
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