Title :
Accuracy evaluation of the LPTF optically pumped primary frequency standard
Author :
de Clercq, E. ; Rovera, G.D. ; Clairon, A.
Author_Institution :
Lab. Primaire du Temps et des Frequences, Obs. de Paris, France
fDate :
June 27 1994-July 1 1994
Abstract :
The optically pumped Cs beam frequency standard under development in our laboratory was first evaluated in 1993. The short term stability was /spl sigma//sub y/(/spl tau/) is 5.5/spl middot/10/sup -13//spl tau//sup - 1/2 /. The accuracy has been estimated to 1.1/spl middot/10/sup -13/, mainly limited by the distributed phase shift. After modification of the cavity, a new evaluation is in progress and is presented.<>
Keywords :
Doppler effect; Zeeman effect; atomic beams; caesium; frequency measurement; measurement standards; optical pumping; Cs; Doppler shift; LPTF; Ramsey cavity; Zeeman effect; cavity pulling; optically pumped Cs beam frequency standard; primary frequency standard; Frequency; Laboratories; Laser excitation; Optical beams; Optical pumping; Optical variables control; Phase estimation; Stability; Structural beams; Uncertainty;
Conference_Titel :
Precision Electromagnetic Measurements, 1994. Digest., 1994 Conference on
Conference_Location :
Boulder, CO, USA
Print_ISBN :
0-7803-1984-2
DOI :
10.1109/CPEM.1994.333418
