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Quantitative optical spectroscopy of $^{87}$Rb vapour in the Voigt geometry in DC magnetic fields up to 0.4T.

Keaveney, James and Ponciano-Ojeda, Francisco S. and Rieche, Stefan M. and Raine, Mark J. and Hampshire, Damian P. and Hughes, Ifan G. (2019) 'Quantitative optical spectroscopy of $^{87}$Rb vapour in the Voigt geometry in DC magnetic fields up to 0.4T.', Journal of physics B : atomic, molecular and optical physics., 52 (5). 055003.


We present a detailed spectroscopic investigation of a thermal <sup>87</sup>Rb atomic vapour in magnetic fields up to 0.4T in the Voigt geometry. We fit experimental spectra with our theoretical model <i>ElecSus</i> and find excellent quantitative agreement, with RMS errors of backsim0.3%. We extract the magnetic field strength and the angle between the polarisation of the light and the magnetic field from the atomic signal and find excellent agreement to within backsim1% with a commercial Hall probe. Finally, we present an investigation of the relative sensitivity of this technique to variations in the field strength and angle with a view to enabling atom-based high-field vector magnetometry.

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Publisher statement:Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
Date accepted:11 January 2019
Date deposited:13 February 2019
Date of first online publication:13 February 2019
Date first made open access:No date available

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