Vladislav P. Gerginov, Sean P. Krzyzewski, Svenja A. Knappe
A scalar magnetic field sensor based on 87Rb vapor millimeter-size cell is described. The magnetometer uses co-propagating pump/probe laser beam, amplitude modulation of the pump beam and non-demolition polarization rotation detection of the probe beam. The magnetometer achieves sensitivities of 500 femtoTesla/sqrt(Hz) in a sensitive volume of 33 mm^3. This noise is reduced to 130 femtoTesla/sqrt(Hz), when the magnetometer sensitivity is measured with gradiometric detection in a volume of 16 mm^3.
, Krzyzewski, S.
and Knappe, S.
A pulsed scalar optically-pumped magnetometer, Optics Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=922375
(Accessed September 28, 2023)