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arXiv · 1707.04418

Orientational Effects on the Amplitude and Phase of Polarimeter Signals in Double Resonance Atomic Magnetometry

Stuart J. Ingleby·Carolyn O'Dwyer·Paul F. Griffin·Aidan S. Arnold·Erling Riis
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Abstract

Double resonance optically pumped magnetometry can be used to measure static magnetic fields with high sensitivity by detecting a resonant atomic spin response to a small oscillating field perturbation. Determination of the resonant frequency yields a scalar measurement of static field ($B_0$) magnitude. We present calculations and experimental data showing that the on-resonance polarimeter signal of light transmitted through an atomic vapour in arbitrarily oriented $B_0$ may be modelled by considering the evolution of alignment terms in atomic polarisation. We observe that the amplitude and phase of the magnetometer signal are highly dependent upon $B_0$ orientation, and present precise measurements of the distribution of these parameters over the full 4π solid angle.

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Stuart J. Ingleby, Carolyn O'Dwyer, Paul F. Griffin, Aidan S. Arnold, Erling Riis. 2017-07-14. Orientational Effects on the Amplitude and Phase of Polarimeter Signals in Double Resonance Atomic Magnetometry. https://doi.org/10.1103/physreva.96.013429

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