Optically pumped magnetometry in arbitrarily oriented magnetic fields

Ingleby, S. J. and Chalmers, I. C. and O'Dwyer, C. and Griffin, P. F. and Arnold, A. S. and Riis, E.; (2017) Optically pumped magnetometry in arbitrarily oriented magnetic fields. In: IEEE Sensors 2017. IEEE, GBR. ISBN 9781509010127 (https://doi.org/10.1109/ICSENS.2017.8233895)

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Optically pumped atomic magnetometers (OPMs) offer highly sensitive magnetic measurements using compact hardware, offering new possibilities for practical precision sensors. Double-resonance OPM operation is well suited to unshielded magnetometry, due to high sensor dynamic range. However, sensor response is highly anisotropic with variation in the orientation of the magnetic field. We present data quantifying these effects and discuss implications for the design of practical sensors.