Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Laurent Devenoges"'
Autor:
Laurent, Devenoges, Gianni, Di Domenico, André, Stefanov, Antoine, Jallageas, Jacques, Morel, Thomas, Südmeyer, Pierre, Thomann
We report the evaluation of the second order Zeeman shift in the continuous atomic fountain clock FoCS-2. Because of the continuous operation and of its geometrical constraints, the methods used in pulsed fountains are not applicable. We use here tim
Externí odkaz:
http://arxiv.org/abs/1608.07099
Autor:
Antoine Jallageas, L G Bernier, D Schenker, Pierre Thomann, M. Petersen, Jacques Morel, Thomas Südmeyer, Laurent Devenoges
Publikováno v:
Metrologia. 55:366-385
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::93558474400da6cba0dd9108ee0df1b3
https://doi.org/10.1088/1681-7575/aab3fa
https://doi.org/10.1088/1681-7575/aab3fa
Autor:
Valentin J. Wittwer, Sandro M. Link, Ursula Keller, Jacques Morel, Laurent Devenoges, Pierre Brochard, Matthias Golling, Nayara Jornod, Stéphane Schilt, Dominik Waldburger, Sargis Hakobyan, Cesare G. E. Alfieri, Thomas Südmeyer
Publikováno v:
Optics letters. 41(14)
We present the first characterization of the noise properties and modulation response of the carrier-envelope offset (CEO) frequency in a semiconductor modelocked laser. The CEO beat of an optically-pumped vertical external-cavity surface-emitting la
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2e1e65149cc008af4cdaf073daef38a6
https://pubmed.ncbi.nlm.nih.gov/27420486
https://pubmed.ncbi.nlm.nih.gov/27420486
Autor:
Jacques Morel, Antoine Jallageas, Pierre Thomann, Gianni Di Domenico, Laurent Devenoges, André Stefanov, Thomas Südmeyer
Publikováno v:
Metrologia
We report the evaluation of the second order Zeeman shift in the continuous atomic fountain clock FoCS-2. Because of the continuous operation and of its geometrical constraints, the methods used in pulsed fountains are not applicable. We use here tim
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9d205476cde83efa2cdfa447e691e711
Publikováno v:
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. 59:211-216
The frequency instability of a shot-noise limited atomic fountain clock is inversely proportional to its signal-to- noise ratio. Therefore, increasing the atomic flux is a direct way to improve the stability. Nevertheless, in pulsed operation, the lo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5ec2c2507d3ad7fa78f0366c10d27cf8
https://doi.org/10.1109/tuffc.2012.2181
https://doi.org/10.1109/tuffc.2012.2181
Autor:
Pierre Thomann, Antoine Jallageas, Laurent Devenoges, M. Petersen, L-G Bernier, G. Di Domenico, Jacques Morel
Publikováno v:
2013 Joint European Frequency and Time Forum & International Frequency Control Symposium (EFTF/IFC).
Recently, microwave phase gradients were identified as the main source of uncertainty in the continuous fountain clock. Indeed, because of its particular geometry with two interaction zones, a dedicated research effort was necessary to reduce this ef
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d22cf84b184f6f519da12ffafc3a9785
https://doi.org/10.1109/eftf-ifc.2013.6702208
https://doi.org/10.1109/eftf-ifc.2013.6702208
Autor:
Pierre Thomann, Jacques Morel, Thomas Südmeyer, Michael Petersen, Antoine Jallageas, Laurent Devenoges, Laurent-Guy Bernier
Publikováno v:
Journal of Physics: Conference Series
The continuous cesium fountain clock FoCS-2 at METAS presents many unique characteristics and challenges in comparison with standard pulsed fountain clocks. For several years FoCS-2 was limited by an unexplained frequency sensitivity on the velocity
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::117cf8bd6b4cdc50ccbe90d5a02f0845
https://doi.org/10.1088/1742-6596/723/1/012010
https://doi.org/10.1088/1742-6596/723/1/012010
Publikováno v:
2011 Joint Conference of the IEEE International Frequency Control and the European Frequency and Time Forum (FCS) Proceedings.
The continuous atomic fountain primary frequency standard FOCS-2 is quite unique since all the atomic fountain clocks presently contributing to the international atomic time (TAI) are operating in pulsed mode [1]. Our alternative approach offers the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a1eaaf6c8969c1fffd9f075c96d5119e
https://doi.org/10.1109/fcs.2011.5977825
https://doi.org/10.1109/fcs.2011.5977825
Fourier analysis of Ramsey fringes observed in a continuous atomic fountain for in situ magnetometry
Ramsey fringes observed in an atomic fountain are formed by the superposition of the individual atomic signals. Due to the atomic beam residual temperature, the atoms have slightly different trajectories and thus are exposed to a different average ma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5b2d5be01125f34cd840c1f7e0247af3
We use two-laser optical pumping on a continuous atomic fountain in order to prepare cold cesium atoms in the same quantum ground state. A first laser excites the F=4 ground state to pump the atoms toward F=3 while a second pi-polarized laser excites
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9b8a914f076918f6e0a3ba877fffb19e