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Compact microwave cavity for high performance rubidium frequency standards

Auteur(s)
Stefanucci, Camillo 
Institut de physique 
Bandi Nagabhushan, Thejesh 
Institut de physique 
Merli, Francesco
Pellaton, Matthieu 
Institut de physique 
Affolderbach, Christoph 
Institut de physique 
Mileti, Gaetano 
Institut de physique 
Skrivervik, Anja K.
In
Review of Scientific Instruments, 2012/83/10/104706-1/8
Résumé
The design, realization, and characterization of a compact magnetron-type microwave cavity operating with a TE<sub>011</sub>-like mode are presented. The resonator works at the rubidium hyperfine ground-state frequency (i.e., 6.835 GHz) by accommodating a glass cell of 25 mm diameter containing rubidium vapor. Its design analysis demonstrates the limitation of the loop-gap resonator lumped model when targeting such a large cell, thus numerical optimization was done to obtain the required performances. Microwave characterization of the realized prototype confirmed the expected working behavior. Double-resonance and Zeeman spectroscopy performed with this cavity indicated an excellent microwave magnetic field homogeneity: the performance validation of the cavity was done by achieving an excellent short-term clock stability as low as 2.4 × 10<sup>−13</sup><i>τ</i><sup>−1/2</sup>. The achieved experimental results and the compact design make this resonator suitable for applications in portable atomic high-performance frequency standards for both terrestrial and space applications.
Identifiants
https://libra.unine.ch/handle/123456789/9698
_
10.1063/1.4759023
Type de publication
journal article
Dossier(s) à télécharger
 main article: Stefanucci_Camillo-_Compact_microwave_cavity_20121127.pdf (2.15 MB)
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