In Situ Measurement of the Non-Orthogonal Angles of Magnetic Field Coils Based on Single-Beam Magnetic Resonance

IF 4.4 Q1 OPTICS
Zhi Liu, Lihong Dong, Zhe Qi, Hongyang Zhu, Bingquan Zhao, Xiaoming Zhao
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Abstract

This work proposes a novel method for in situ measurement of the non-orthogonal angles of magnetic field coils based on single-beam magnetic resonance. The orthogonality of magnetic field coils is crucial for ensuring the accuracy of atomic magnetometers. The theoretical principles are derived to establish a measurement method for the non-orthogonal angles. The proposed method requires only one single beam of light to perform in situ measurements of non-orthogonal angles in the YZ and XZ directions. The experimental results demonstrate that the angle between the Y and Z coils is 89.3001 ± 0.0045°, a value that remains stable despite variations in experimental parameters such as temperature and light power, thereby confirming the robustness of the method. Additionally, the measured gyromagnetic ratio is 6.9963 ± 0.0005 Hz nT−1, which closely matches the theoretical value of 6.9958 Hz nT−1, further validating the method's accuracy. The proposed method provides a more straightforward approach and has significant potential for widespread application across various atomic magnetometers, especially in miniaturized configurations. Furthermore, this method may be extended to the field of atomic gyroscopes.

Abstract Image

基于单束磁共振的磁场线圈非全交角现场测量法
这项研究提出了一种基于单束磁共振的原位测量磁场线圈非正交角的新方法。磁场线圈的正交性对于确保原子磁强计的精度至关重要。通过推导理论原理,建立了非正交角的测量方法。所提出的方法只需要一束光,就能对 YZ 和 XZ 方向的非正交角进行现场测量。实验结果表明,Y 和 Z 线圈之间的角度为 89.3001 ± 0.0045°,该值在温度和光功率等实验参数发生变化时仍保持稳定,从而证实了该方法的稳健性。此外,测得的回旋磁比为 6.9963 ± 0.0005 Hz nT-1,与理论值 6.9958 Hz nT-1 非常接近,进一步验证了该方法的准确性。所提出的方法提供了一种更直接的方法,具有广泛应用于各种原子磁强计的巨大潜力,特别是在小型化配置中。此外,这种方法还可以扩展到原子陀螺仪领域。
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CiteScore
7.90
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