High-purity microwave signal from a dual-frequency semiconductor laser for CPT atomic clocks (poster)

Abstract : Coherent population trapping (CPT) of metal-alkali atoms is an interesting technique for the development of compact atomic frequency references; it relies on the excitation of the atoms by two phase-coherent laser fields. We describe the design and operation of an innovating dual-frequency laser source dedicated to Cs CPT atomic clocks, based on the direct dual-frequency and dual-polarization operation of an optically-pumped semiconductor laser at 852 nm. The phase noise of beatnote generated by the laser source is at maximum of -90 dBrad²/Hz with active stabilization, and the relative intensity noise (RIN) has been measured at -115 dB/Hz. It would potentially results in a clock frequency stability of 1.6 .10^-12 at 1 second, limited by the laser RIN. With proper adjustments in the laser and clock set-up, we target a stability of 3.10^-13 at 1 second.
Type de document :
Communication dans un congrès
European Frequency & Time Forum, Jun 2014, Neuchâtel, Switzerland
Liste complète des métadonnées

Littérature citée [8 références]  Voir  Masquer  Télécharger

https://hal-iogs.archives-ouvertes.fr/hal-01074037
Contributeur : Gaëlle Lucas-Leclin <>
Soumis le : dimanche 12 octobre 2014 - 11:49:44
Dernière modification le : jeudi 22 novembre 2018 - 14:39:53
Document(s) archivé(s) le : mardi 13 janvier 2015 - 10:11:22

Fichier

Proceedings_EFTF_2014.pdf
Fichiers produits par l'(les) auteur(s)

Identifiants

  • HAL Id : hal-01074037, version 1

Citation

Paul Dumont, Fabiola Camargo, Patrick Georges, Gaëlle Lucas-Leclin, Jean-Marie Danet, et al.. High-purity microwave signal from a dual-frequency semiconductor laser for CPT atomic clocks (poster). European Frequency & Time Forum, Jun 2014, Neuchâtel, Switzerland. 〈hal-01074037〉

Partager

Métriques

Consultations de la notice

681

Téléchargements de fichiers

275