Gonzalez Maldonado, M.
, Li, Y.
, McKelvy, J.
, Matsko, A.
, Novikova, I.
, Mikhailov, E.
, Kitching, J.
and Wang, Y.
(2025),
Light shift suppression in a CPT magnetometer using linear polarization and double frequency interrogation, Optics Letters, [online], https://doi.org/10.1364/OL.580190, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=960557
(Accessed January 29, 2026)
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Light shift suppression in a CPT magnetometer using linear polarization and double frequency interrogation
Published
Author(s)
, Yang Li, Jamie McKelvy, Andrey Matsko, Irina Novikova, Eugeniy Mikhailov, ,
Abstract
We demonstrate a suppression of the light shift in a Coherent-Population-Trapping (CPT) atomic magnetometer by using linearly polarized light and a differential measurement between magnetic resonances. The radio frequency that creates the optical sidebands for CPT quickly switches between two magnetic sensitive transitions, and the magnetic field is extrapolated from the difference of the center frequencies of the magnetic resonances. Light shifts and common drifts like collisional shifts can be suppressed through careful choice of measured resonances, and we show the light shift reduction by more than a factor of 20 compared to excitation with circularly-polarized light. Various limitations of the method are discussed.Citation
Optics Letters
Volume
51
Issue
2
Pub Type
Journals
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Created December 30, 2025, Updated January 28, 2026