Observation of the Strong Magneto-Optical Rotation of the Polarization of Light in Rubidium Vapor for Applications in Atomic Magnetometry
- Authors: Makarov A.O1,2, Brazhnikov D.V1,2, Goncharov A.N1,3,2
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Affiliations:
- Institute of Laser Physics, Siberian Branch, Russian Academy of Sciences, 630090, Novosibirsk, Russia
- Novosibirsk State Technical University, 630073, Novosibirsk, Russia
- Novosibirsk State University, 630090, Novosibirsk, Russia
- Issue: Vol 117, No 7-8 (4) (2023)
- Pages: 509-517
- Section: Articles
- URL: https://rjraap.com/0370-274X/article/view/664125
- DOI: https://doi.org/10.31857/S1234567823070054
- EDN: https://elibrary.ru/JPTLTI
- ID: 664125
Cite item
Abstract
Nonlinear resonances in alkali metal vapor, which are detected by the magneto-optical rotation of the linear polarization of light, are actively used in quantum magnetometry to fabricate atomic magnetometers. The magneto-optical rotation in most such sensors is due to magnetic birefringence, and rotation angles usually do not exceed tens of milliradians. In this work, an experiment where magneto-optical resonances of linear polarization rotation of a probe wave are due to strong dichroism induced in a medium by a counterpropagating pump wave has been proposed. Both waves are in resonance with the Fg = 2 → Fe = 1 optical transition in the 87Rb D1 line (λ ≈ 795 nm). Experiments have been carried out with a 2-cm-long cylindrical cell filled with a buffer gas, and the maximum rotation angle is ≈390 mrad (22°) at a width of resonance of about 300 nT. The results show that the configuration proposed for the observation of magneto-optical rotation is promising for the fabrication of compact high-sensitivity atomic magnetometers.
About the authors
A. O Makarov
Institute of Laser Physics, Siberian Branch, Russian Academy of Sciences, 630090, Novosibirsk, Russia; Novosibirsk State Technical University, 630073, Novosibirsk, Russia
Email: x-kvant@mail.ru
D. V Brazhnikov
Institute of Laser Physics, Siberian Branch, Russian Academy of Sciences, 630090, Novosibirsk, Russia; Novosibirsk State Technical University, 630073, Novosibirsk, Russia
Email: x-kvant@mail.ru
A. N Goncharov
Institute of Laser Physics, Siberian Branch, Russian Academy of Sciences, 630090, Novosibirsk, Russia; Novosibirsk State University, 630090, Novosibirsk, Russia; Novosibirsk State Technical University, 630073, Novosibirsk, Russia
Author for correspondence.
Email: x-kvant@mail.ru
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