Metrological features of the rubidium two-photon standards of the BNM-LPTF and Kastler Brossel Laboratories

Issue		Eur. Phys. J. Appl. Phys. Volume 4, Number 2, November 1998


Page(s)		219 - 225
DOI		10.1051/epjap:1998263

DOI: 10.1051/epjap:1998263

Eur. Phys. J. AP 4, 219-225

Metrological features of the rubidium two-photon standards
of the BNM-LPTF and Kastler Brossel Laboratories

L. Hilico^1, ² - R. Felder³ - D. Touahri⁴ - O. Acef⁴ - A. Clairon⁴ - F. Biraben¹

¹ Laboratoire Kastler Brossel, École Normale Supérieure, Université Pierre et Marie Curie, 4 place Jussieu,
Tour 12, E 01, C 74, 75252, Paris Cedex 05, France
² Département de physique et modélisation, Université d'Évry-Val-d'Essonne, Boulevard des Coquibus,
91025 Évry Cedex, France
³ Bureau International des Poids et Mesures (BIPM), Pavillon de Breteuil, 92312, Sèvres Cedex, France
⁴ Laboratoire Primaire du Temps et des Fréquences (BNM-LPTF) Observatoire de Paris, 61 avenue de l'Observatoire,
75014 Paris, France

Received: 2 April 1998 / Revised: 24 June 1998 / Accepted: 26 June 1998

Abstract
We have built three optical frequency standards based on the two-photon transition of rubidium at 778 nm, and analysed their performance over a period of more than three years. We discuss some systematic effects that could lead to the reproducibility we observe, and point out the possible improvements of the devices. We also examine the short and long term stabilities of the systems, and show that we have reached their ultimate performances.

PACS
42.62.Fi Laser spectroscopy - 06.20.-f Metrology - 42.62.Eh Metrological applications

Author for correspondance: hilico@spectro.jussieu.fr

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