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This paper reviews the progress made in the miniaturization of an isotropic space-qualified optically pumped magnetometer. Sensor isotropy is provided by a liquid crystal polarization rotator that sets the linear pumping beam polarization at 90° with respect to the ambient magnetic field. It allows a continuous polarization rotation from 0 to more than 300° with response times compatible with mobile...
CEA-LETI and CNES have successfully realized a helium-4 isotropic space-qualified magnetometer for the SWARM mission. The present paper reviews the progress made in the miniaturization of this isotropic optically pumped magnetometer. Sensor isotropy is provided by a liquid crystal polarization rotator that sets the pumping beam polarization at 90° with respect to the ambient magnetic field. It allows...
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