432 citations · 4.4k across the 35 of their papers we have counts for
18 papers · 1 filter
Contributing to TAI with a Secondary Representation of the SI Second
Jocelyne Guéna, Michel Abgrall, André Clairon +1
We report the first contribution to the international atomic time (TAI) based on a secondary representation of the SI second. This work is done with the LNE-SYRTE FO2-Rb fountain f…
Improved tests of Local Position Invariance using 87Rb and 133Cs fountains
Jocelyne Guéna, Michel Abgrall, Daniele Rovera +5
We report tests of local position invariance based on measurements of the ratio of the ground state hyperfine frequencies of 133Cs and 87Rb in laser-cooled atomic fountain clocks.…
Progress in Atomic Fountains at LNE-SYRTE
Jocelyne Guéna, Michel Abgrall, Daniele Rovera +10
We give an overview of the work done with the Laboratoire National de Métrologie et d'Essais-Systèmes de Référence Temps-Espace (LNE-SYRTE) fountain ensemble during the last five y…
Ultra-low noise microwave generation with fiber-based optical frequency comb and application to atomic fountain clock
J. Millo, M. Abgrall, M. Lours +8
We demonstrate the use of a fiber-based femtosecond laser locked onto an ultra-stable optical cavity to generate a low-noise microwave reference signal. Comparison with both a liqu…
Off-resonant Raman transitions impact in an atom interferometer
A. Gauguet, Tanja Mehlstäubler, Thomas Lévèque +6
We study the influence of off-resonant two photon transitions on high precision measurements with atom interferometers based on stimulated Raman transitions. These resonances induc…
Doppler-free spectroscopy of the 1S0-3P0 optical clock transition in laser-cooled fermionic isotopes of neutral mercury
M. Petersen, R. Chicireanu, S. T. Dawkins +5
We have performed for the first time direct laser spectroscopy of the 1S0-3P0 optical clock transition at 265.6 nm in fermionic isotopes of neutral mercury laser-cooled in a magnet…