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Published on: November 11, 2013
Demonstration of a dual alkali Rb/Cs fountain clock
Jocelyne Guéna1, Peter Rosenbusch, Philippe Laurent
1Laboratoire National de Métrologie-Système de Référence Temps Espace, Observatoire de Paris, France. jocelyne.guena@obspm.fr
Abstract:
We report the operation of a dual Rb/Cs atomic fountain clock. (133)Cs and (87)Rb atoms are cooled, launched, and detected simultaneously in LNE-SYRTE's FO2 double fountain. The dual clock operation occurs with no degradation of either the stability or the accuracy. We describe the key features for achieving such a simultaneous operation. We also report on the results of the first Rb/Cs frequency measurement campaign performed with FO2 in this dual atom clock configuration, including a new determination of the absolute (87)Rb hyperfine frequency.
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