Measurement and suppression of tensor light shift for nonlinear magneto-optical rotating atomic magnetometers

IF 4.1 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Sensors and Actuators A-physical Pub Date : 2025-04-21 DOI:10.1016/j.sna.2025.116562

Mengnan Tian , Liwei Jiang , Yanchao Chai , Jiali Liu , Zhenglong Lu , Junlin Chen , Xin Zhao , Wei Quan

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Abstract

In the NMOR atomic magnetometer, the tensor light shift is identified as a critical systemic error that affects the accuracy of magnetic resonance frequency measurements. In this paper, we present a tensor light shift measurement and suppression method based on Linear Resonance Frequency Variation and Reverse Magnetic Compensation (LRFV-RMC), which utilizes the resonance frequency linear dependence on the light shift, along with a suppression technique based on reverse magnetic compensation. To further enhance the compensation accuracy and improve the long-term stability of magnetic field measurement, a closed-loop light power control scheme is introduced. The theoretical models of resonant frequency and tensor light shift are established and the mechanism of the influence of light shift on resonance frequency is clarified. Additionally, the light shift and its corresponding magnetic resonance signals are investigated theoretically and experimentally under different light power, polarization direction and magnetic field amplitude. As a result, compared to the existing system, the proposed method effectively compensates for tensor light shift and improves the long-term stability of the magnetic resonance signal by at least 25.8%. This work provides a practical approach to improving the accuracy and stability of NMOR atomic magnetometers.

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非线性磁光旋转原子磁强计张量光移的测量与抑制

在NMOR原子磁强计中，张量光移被确定为影响磁共振频率测量精度的关键系统误差。本文提出了一种基于线性共振频率变化和反向磁补偿的张量光移测量和抑制方法（LRFV-RMC），该方法利用了共振频率和光移的线性依赖关系，以及基于反向磁补偿的抑制技术。为了进一步提高补偿精度，提高磁场测量的长期稳定性，提出了一种闭环光功率控制方案。建立了共振频率和张量光移的理论模型，阐明了光移对共振频率的影响机理。此外，对不同光功率、极化方向和磁场幅值下的光移及其相应的磁共振信号进行了理论和实验研究。结果表明，与现有系统相比，所提方法有效地补偿了张量光移，使磁共振信号的长期稳定性提高了至少25.8%。这项工作为提高NMOR原子磁强计的精度和稳定性提供了一种实用的方法。

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来源期刊

Sensors and Actuators A-physical 工程技术-工程：电子与电气

CiteScore

8.10

自引率

6.50%

发文量

630

审稿时长

49 days

期刊介绍： Sensors and Actuators A: Physical brings together multidisciplinary interests in one journal entirely devoted to disseminating information on all aspects of research and development of solid-state devices for transducing physical signals. Sensors and Actuators A: Physical regularly publishes original papers, letters to the Editors and from time to time invited review articles within the following device areas: • Fundamentals and Physics, such as: classification of effects, physical effects, measurement theory, modelling of sensors, measurement standards, measurement errors, units and constants, time and frequency measurement. Modeling papers should bring new modeling techniques to the field and be supported by experimental results. • Materials and their Processing, such as: piezoelectric materials, polymers, metal oxides, III-V and II-VI semiconductors, thick and thin films, optical glass fibres, amorphous, polycrystalline and monocrystalline silicon. • Optoelectronic sensors, such as: photovoltaic diodes, photoconductors, photodiodes, phototransistors, positron-sensitive photodetectors, optoisolators, photodiode arrays, charge-coupled devices, light-emitting diodes, injection lasers and liquid-crystal displays. • Mechanical sensors, such as: metallic, thin-film and semiconductor strain gauges, diffused silicon pressure sensors, silicon accelerometers, solid-state displacement transducers, piezo junction devices, piezoelectric field-effect transducers (PiFETs), tunnel-diode strain sensors, surface acoustic wave devices, silicon micromechanical switches, solid-state flow meters and electronic flow controllers. Etc...