A high-sensitivity laser-pumped Mx magnetometer

By S. Groeger, G. Bison, J. Schenker, Robert Wynands, Antoine Weis. 2004

152 citations recorded by the source corpus.

Abstract. We discuss the design and performance of a laser-pumped cesium vapor magnetometer in the Mx configuration. The device will be employed in the control and stabilization of fluctuating magnetic fields and gradients in a new experiment searching for a permanent electric dipole moment of the neutron. We have determined the intrinsic sensitivity of the device to be 15 fT in a 1 Hz bandwidth, limited by technical laser noise. In the shot noise limit the magnetometer can reach a sensitivity of 10 fT in a 1 Hz bandwidth. We have used the device to study the fluctuations of a stable magnetic field in a multi-layer magnetic shield for integration times in the range of 2–100 seconds. The residual fluctuations for times up to a few minutes are traced back to the instability of the power supply used to generate the field.

Subfields: Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/7c4e4acb0e3efacf224e755aee610ce6e835c193

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In Atomic and Molecular Physics, and Optics

Citations in the corpus

Atomic Sensors – A Review (2011, methodology): “One example of an optical magnetometer is the Mx magnetometer [29], [33].”
Optical magnetometry - eScholarship (2006, unknown): “A weak magnetic field oscillating at the Larmor frequency is commonly used for this purpose [3, 11].”
Quantum interface between light and atomic ensembles (2008, methodology): “Such coating has been used in precision magnetometers for the past three decades (Alexandrov, 2003; Groeger et al., 2006), and ground state coherence times of up to a second have been demonstrated.”