Microfabricated vapor cells for miniature atomic clocks based on post-sealing activated cesium dispensers

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TitreMicrofabricated vapor cells for miniature atomic clocks based on post-sealing activated cesium dispensers
Type de publicationConference Paper
Year of Publication2017
AuteursMaurice V., Rutkowski J., Kroemer E., Bargiel S., Passilly N., Boudot R., Chutani R., Galliou S., Gorecki C., Mauri L., Moraja M.
Conference Name2017 JOINT CONFERENCE OF THE EUROPEAN FREQUENCY AND TIME FORUM AND IEEE INTERNATIONAL FREQUENCY CONTROL SYMPOSIUM (EFTF/IFC)
PublisherIEEE
Conference Location345 E 47TH ST, NEW YORK, NY 10017 USA
ISBN Number978-1-5386-2916-1
Mots-clésalkali vapor cells, alkali vapor dispensing, miniature atomic clocks
Résumé

We report techniques based on cesium dispensers to fill microfabricated vapor cells for miniature atomic clocks applications. Two main types of dispensers are considered, which take the form of pills or paste. Whereas the pill contains a large quantity of Cs, the paste is more compatible with wafer-level fabrication. In both cases, the main advantage is the release of the cesium vapor only once the cell has been sealed, ensuring an optimal cell fabrication. Activation is thus performed through local heating of the dispenser with a laser. Cells using both dispenser types are shown to be compatible with atomic clocks requirements, namely a clock frequency instability below 1 x 10(-11) at one day integration time.