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

Volume

1

fYear

1999

fDate

1999

Firstpage

9

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;

fLanguage

English

Publisher

ieee

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

ISSN

1075-6787

Print_ISBN

0-7803-5400-1

Type

conf

DOI

10.1109/FREQ.1999.840694

Filename

840694