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Cryogenic dual-mode resonator for a fly-wheel oscillator for a caesium frequency standard

Identifieur interne : 00B781 ( Main/Exploration ); précédent : 00B780; suivant : 00B782

Cryogenic dual-mode resonator for a fly-wheel oscillator for a caesium frequency standard

Auteurs : Michael E. Tobar [Australie] ; John G. Hartnett [Australie] ; Eugene N. Ivanov [Australie] ; Dominique Cros [France] ; Pawel Bilski [Australie]

Source :

IEEE transactions on ultrasonics, ferroelectrics, and frequency control [ 0885-3010 ] ; 2002.

RBID : Pascal:02-0566827

Descripteurs français

Pascal (Inist)
- Mesure fréquence, Césium, Horloge atomique, Résonateur cavité, Température cryogénique, Etalon atomique, Saphir, Stabilité fréquence, Modélisation, Méthode numérique, Méthode élément fini, Etude expérimentale, 0630F.

English descriptors

KwdEn :
- Atomic clocks, Atomic standard, Cavity resonators, Cesium, Cryogenic temperature, Experimental study, Finite element method, Frequency measurement, Frequency stability, Modelling, Numerical method, Sapphire.

Abstract

A dual-mode, sapphire-loaded cavity (SLC) resonator has been designed and optimized with the aid of finite element software. The resonance frequency was designed to be near the frequency of a Cs atomic frequency standard. Experimental tests are shown to agree very well with calculations. The difference frequency of two differently polarized modes is shown to be a highly sensitive temperature sensor in the 50 to 80 K temperature range. We show that an oscillator based on this resonator has the potential to operate with fractional frequency instability below 10^-14 for measurement times of 1 to 100 seconds. This is sufficient to operate an atomic clock at the quantum projection noise limit.

Affiliations:

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Le document en format XML

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<term>Cryogenic temperature</term>
<term>Experimental study</term>
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<term>Modélisation</term>
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<front><div type="abstract" xml:lang="en">A dual-mode, sapphire-loaded cavity (SLC) resonator has been designed and optimized with the aid of finite element software. The resonance frequency was designed to be near the frequency of a Cs atomic frequency standard. Experimental tests are shown to agree very well with calculations. The difference frequency of two differently polarized modes is shown to be a highly sensitive temperature sensor in the 50 to 80 K temperature range. We show that an oscillator based on this resonator has the potential to operate with fractional frequency instability below 10<sup>-14</sup>
 for measurement times of 1 to 100 seconds. This is sufficient to operate an atomic clock at the quantum projection noise limit.</div>
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Cryogenic dual-mode resonator for a fly-wheel oscillator for a caesium frequency standard

Cryogenic dual-mode resonator for a fly-wheel oscillator for a caesium frequency standard

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri