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Barometric Effect in Vapor-Cell Atomic Clocks

Auteur(s)
Moreno, William 
Institut de physique 
Affolderbach, Christoph 
Institut de physique 
Mileti, Gaetano 
Institut de physique 
Date de parution
2018-6-4
In
IEEE TRANSACTIONS ON ULTRASONICS, FERROELECTRICS, AND FREQUENCY CONTROL
Vol.
8
No
65
De la page
1500
A la page
1503
Mots-clés
  • Atomic clocks

  • barometric effect

  • long-termstability

  • pressure shift

  • Ramsey scheme

  • satellite navigatio...

  • vapor cells.

Résumé
Vapor-cell atomic clocks are compact and high-performance frequency references employed in various appli-cations ranging from telecommunication to global positioningsystems. Environmental sensitivities are often the main sourcesof long-term instabilities of the clock frequency. Among thesesensitivities, the environmental pressure shift describes the clockfrequency change with respect to the environmental pressurevariations. We report here on our theoretical and experimentalanalysis of the environmental pressure shift on rubidium atomicfrequency standards (RAFSs) operated under open atmosphere.By using an unsealed high-performance laser-pumped rubidiumstandard, we demonstrate that the deformation of the vapor-cell volume induced by the environmental pressure changes(i.e., barometric effect) is the dominant environmental pressureshift in a standard laboratory environment. An experimentalbarometric coefficient of 8.2×10−14/hPa is derived, in goodagreement with theory and with previously reported measure-ments of frequency shifts of RAFS operated when transiting tovacuum.
Lié au projet
FN Rubidium-Precision double resonance spectroscopy and metrology 
URI
https://libra.unine.ch/handle/123456789/27223
DOI
10.1109/TUFFC.2018.2844020
Autre version
https://doi.org/10.1109/TUFFC.2018.2844020
Type de publication
Resource Types::text::journal::journal article
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