Title :
Interrogation oscillator noise rejection in the comparison of atomic fountains
Author :
Bize, S. ; Sortais, Y. ; Lemonde, P. ; Zhang, S. ; Laurent, Ph ; Santarelli, G. ; Salomon, C. ; Clairon, A.
Author_Institution :
BNM-LPTF, Obs. de Paris, France
Abstract :
The frequency stability of an atomic fountain clock can be limited by the phase noise of the interrogation oscillator via the “Dick Effect”. In this paper we demonstrate the rejection of the phase fluctuations of the interrogation oscillator by the synchronisation of atomic fountains. A reduction by a factor of 16 in the Allan standard deviation of the relative frequency difference between two fountains has been obtained
Keywords :
atomic clocks; fluctuations; frequency standards; phase noise; synchronisation; time measurement; Allan standard deviation; Dick Effect; atomic fountain clock; atomic fountains; frequency stability; interrogation oscillator noise rejection; phase fluctuations; phase noise; relative frequency difference; synchronisation; 1f noise; Atomic clocks; Fluctuations; Frequency conversion; Frequency synchronization; Oscillators; Phase noise; Process control; Stability; Standards development;
Conference_Titel :
Frequency and Time Forum, 1999 and the IEEE International Frequency Control Symposium, 1999., Proceedings of the 1999 Joint Meeting of the European
Conference_Location :
Besancon
Print_ISBN :
0-7803-5400-1
DOI :
10.1109/FREQ.1999.840694
