All-optical atomic magnetometry using an elliptically polarized amplitude-modulated light wave

被引：1

作者：

Makarov, Anton ^{[1
,2
]}

Kozlova, Katerina ^{[1
,2
]}

Brazhnikov, Denis ^{[1
,2
]}

Vishnyakov, Vladislav ^{[1
]}

Goncharov, Andrey ^{[1
,2
,3
]}

机构：

[1] SB RAS, Inst Laser Phys, 15b Lavrentiev Ave, Novosibirsk 630090, Russia

[2] Novosibirsk State Univ, 1 Pirogov St, Novosibirsk 630090, Russia

[3] Novosibirsk State Tech Univ, 20 Karl Marks Ave, Novosibirsk 630073, Russia

来源：

OPTICS COMMUNICATIONS | 2025年 / 577卷

基金：

俄罗斯科学基金会;

关键词：

Atomic magnetometers; Bell-Bloom scheme; Elliptic polarization; Circular dichroism;

D O I：

10.1016/j.optcom.2024.131369

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We study a resonant interaction of an elliptically polarized light wave with Rb-87 vapor (D-1 line) exposed to a transverse magnetic field. A 5x5x5 mm(3) glass vapor cell is used for the experiments. The wave intensity is modulated at the frequency Omega(m). By scanning Omega(m) near the Larmor frequency Omega(L), a magnetic resonance (MR) can be observed as a change in the ellipticity parameter of the wave polarization caused by the circular dichroism of the medium. This method for observing MR allows to significantly improve the signal-to-noise ratio compared to a classical Bell-Bloom scheme using a circularly polarized wave. Under current experimental conditions, the sensitivity of the magnetic field sensor is estimated to be approximate to 130 fT/root Hz in a approximate to 2.1 kHz bandwidth. The proposed technique confidently competes with other widely used Bell-Bloom-like schemes based on the Faraday rotation of the light wave polarization, while being more simple and robust. The results can be used to develop a miniature all-optical magnetic field sensor for medicine and geophysics.

引用

页数：7