Title :
Laser cooling and launching performance in a (1,1,1)-geometry atomic fountain
Author :
Donley, E.A. ; Heavner, T.P. ; O´Brien, J.W. ; Jefferts, S.R. ; Levi, F.
Author_Institution :
NIST Time & Frequency Div., Boulder, CO, USA
Abstract :
We have successfully cooled and launched cesium atoms in the (1,1,1) atomic fountain geometry at temperatures as low as 0.8 μK. This corresponds to a root-mean-square thermal velocity of 0.7 cm/s, which is two times the photon recoil velocity of 0.35 cm/s. Factors that limit the final temperature are presented in detail.
Keywords :
atomic clocks; caesium; laser cooling; measurement standards; Cs; cesium atoms; geometry atomic fountain; laser cooling; photon recoil velocity; root-mean-square thermal velocity; Atom lasers; Atomic beams; Atomic measurements; Clocks; Cooling; Geometry; Structural beams; Temperature sensors; Throughput; Uncertainty;
Conference_Titel :
Frequency Control Symposium and Exposition, 2005. Proceedings of the 2005 IEEE International
Print_ISBN :
0-7803-9053-9
DOI :
10.1109/FREQ.2005.1573946
