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On the Critical Impact of HF Power Drifts for Miniature Helium-Based NMR Gyroscopes

Publié le 29 mars 2018
On the Critical Impact of HF Power Drifts for Miniature Helium-Based NMR Gyroscopes
Auteurs
Palacios-Laloy A., Rutkowski J., Troadec Y., Leger J.-M.
Year2017-0142
Source-TitleIEEE Sensors Journal
Affiliations
CEA-LETI, Minatec, Grenoble, France, FEMTO-ST Institute, Besançon, France
Abstract
Nuclear magnetic resonance (NMR) gyroscopes constitute a promising technology for miniaturizing navigation-class gyroscopes. We analyze here a configuration based on a mixture of helium-3 and helium-4. We show that frequency shifts due to the circulation of coherence between helium atoms in metastable and fundamental states have a large impact on the gyroscope drift. In order to reach navigation-class, the high-frequency source used to ignite the plasma is required to have a long-term power stability better than ppm. © 2017 IEEE.
Author-Keywords
atomic sensors, inertial sensors, NMR gyroscope, Optical-pumping
Index-Keywords
Gyroscopes, Helium, Optical pumping, Plasma stability, Atomic sensors, Frequency shift, Helium atom, High frequency HF, Inertial sensor, Nuclear magnetic resonance(NMR), Power drift, Power stability, Nuclear magnetic resonance
ISSN1530437X
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