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. |
| Year | 2017-0142 |
| Source-Title | IEEE 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 |
| ISSN | 1530437X |
| Lien vers article | Link |