High-contrast sub-Doppler absorption spikes in a hot atomic vapor cell exposed to a dual-frequency laser field

Abstract : The saturated absorption technique is an elegant method widely used in atomic and molecular physics for high-resolution spectroscopy, laser frequency standards and metrology purposes. We have recently discovered that a saturated absorption scheme with a dual-frequency laser can lead to a significant sign reversal of the usual Doppler-free dip, yielding a deep enhanced-absorption spike. In this paper, we report detailed experimental investigations of this phenomenon, together with a full in-depth theoretical description. It is shown that several physical effects can support or oppose the formation of the high-contrast central spike in the absorption profile. The physical conditions for which all these effects act constructively and result in very bright Doppler-free resonances are revealed. Apart from their theoretical interest, results obtained in this manuscript are of great interest for laser spectroscopy and laser frequency stabilization purposes, with applications in laser cooling, matter-wave sensors, atomic clocks or quantum optics.
Type de document :
Article dans une revue
New Journal of Physics, Institute of Physics: Open Access Journals, 2017, 19, pp.073028. 〈10.1088/1367-2630/aa7258〉
Liste complète des métadonnées

Littérature citée [45 références]  Voir  Masquer  Télécharger

http://hal.upmc.fr/hal-01579408
Contributeur : Gestionnaire Hal-Upmc <>
Soumis le : jeudi 31 août 2017 - 10:09:45
Dernière modification le : mercredi 21 mars 2018 - 18:57:49

Fichier

Abdel_Hafiz_2017_New_J._Phys._...
Publication financée par une institution

Licence


Distributed under a Creative Commons Paternité 4.0 International License

Identifiants

Citation

Moustafa Abdel Hafiz, Denis Brazhnikov, Grégoire Coget, Alexei Taichenachev, Valeriy Yudin, et al.. High-contrast sub-Doppler absorption spikes in a hot atomic vapor cell exposed to a dual-frequency laser field. New Journal of Physics, Institute of Physics: Open Access Journals, 2017, 19, pp.073028. 〈10.1088/1367-2630/aa7258〉. 〈hal-01579408〉

Partager

Métriques

Consultations de la notice

197

Téléchargements de fichiers

40