TY - JOUR

T1 - Observation of the Strong Magneto-Optical Rotation of the Polarization of Light in Rubidium Vapor for Applications in Atomic Magnetometry

AU - Makarov, A. O.

AU - Brazhnikov, D. V.

AU - Goncharov, A. N.

N1 - This work was supported by the Russian Foundation for Basic Research (project nos. 20-52-18004 and 20-02-00075). A.N. Goncharov, who fabricated the laser system, acknowledges the support of the Ministry of Science and Higher Education of the Russian Federation (theme no. АААА-А19-119102890006-5). Публикация для корректировки.

PY - 2023/4

Y1 - 2023/4

N2 - 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 F g = 2 → F e = 1 optical transition in the 87Rb D 1 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.

AB - 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 F g = 2 → F e = 1 optical transition in the 87Rb D 1 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.

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85160258438&origin=inward&txGid=21453f5d412dac076b9374c3e600f1e2

UR - https://www.mendeley.com/catalogue/e7c46f66-62fb-3244-b2ef-90ddaba221e8/

U2 - 10.1134/S0021364023600684

DO - 10.1134/S0021364023600684

M3 - Article

VL - 117

SP - 509

EP - 516

JO - JETP Letters

JF - JETP Letters

SN - 0021-3640

IS - 7

ER -