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

Agustin Palacios-Laloy; Jaroslaw Rutkowski; Yann Troadec; Jean-Michel Léger

doi:10.1109/JSEN.2016.2632179

Journal articles

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

Agustin Palacios-Laloy ¹ Jaroslaw Rutkowski ^{2, 1} Yann Troadec ¹ Jean-Michel Léger ¹

1 CEA-LETI - Commissariat à l'énergie atomique et aux énergies alternatives - Laboratoire d'Electronique et de Technologie de l'Information

2 FEMTO-ST - Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174)

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.

Keywords : optical-pumping NMR gyroscope inertial sensors atomic sensors

Document type :

Journal articles

Domain :

Engineering Sciences [physics]

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https://hal-cea.archives-ouvertes.fr/cea-02202432
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Submitted on : Wednesday, July 31, 2019 - 4:34:43 PM
Last modification on : Thursday, November 12, 2020 - 9:42:16 AM

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

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

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