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Role of the probe beam in a radio-frequency atomic magnetometer

Bevington, P; Rajroop, J; Gartman, R; Chalupczak, W (2020) Role of the probe beam in a radio-frequency atomic magnetometer. Applied Optics, 59 (20). 6054 ISSN 1559-128X

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We explore the role of the linearly polarized probe beam in the radio-frequency atomic magnetometer.Two regimes of coupling of the linearly polarized light to the atomic ensemble, near and off-resonant, are demonstrated and discussed. Our studies cover three types of interaction between the atomic spin system and the linearly polarized beam, i.e., absorptive production of spin polarization, dispersive spin state readout, and nonlinear spin couplings. The work is performed with the outlook of optimization and simplification of magnetometer operation.Operation of a magnetometer with a single beam, generating and probing the atomic orientation, is presented. This single-beam configuration, which combines optical pumping, nonlinear spin couplings, and spin-exchange collisions, creates the option for a portable device with simple instrumentation.

Item Type: Article
Keywords: Atomic magnetometer
Subjects: Time and Frequency > Microwave Frequency Standards
Divisions: Time & Frequency
Identification number/DOI: 10.1364/AO.396941
Last Modified: 16 Oct 2020 13:41
URI: http://eprintspublications.npl.co.uk/id/eprint/8912

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