K-Rb-21Ne磁光计磁光失调的原位评估与有效抑制

IF 5.9 2区 工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC
Longyan Ma;Haoying Pang;Xiaohan Ge;Ye Liu;Jiale Quan;Hao Xia;Zhihong Wu;Lihong Duan;Xusheng Lei;Wei Quan
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引用次数: 0

摘要

本文研究了自旋交换无弛豫(SERF)磁光失调对原子自旋响应的影响,并提出了一种测量和补偿失调角的方法。通过分析不同偏置磁场强度下的核自旋进动,提取了核自旋等效磁场($B_{n}$)和泵浦光束与主磁场之间的不对中角$\theta $。为了抑制已识别的不对准,提出了一种基于周期性强磁场脉冲的对准技术。该方法可实现泵浦光束方向的快速原位调整,从而增强核自旋自补偿和整体系统性能。实验验证表明,该方法提高了对横向磁场干扰的抑制能力,抑制率为43.2% enhancement in magnetic response attenuation. Additionally, magneto-optical alignment optimization results in marked improvements in system stability and sensitivity: the Allan deviation at 100 s is reduced by 34%, and the inertial measurement noise at 1 Hz decreases by 43.3%, achieving a sensitivity of $3.56\times {10^{ - 6}}{{\mathrm { }}^{\circ } }/\text {s}/\sqrt {\text {Hz}}$ .
本文章由计算机程序翻译,如有差异,请以英文原文为准。
In Situ Evaluation and Efficient Suppression of Magneto-Optical Misalignment in K–Rb–21Ne Comagnetometers
This study investigates the impact of magneto-optical misalignment on atomic spin responses in a spin-exchange relaxation-free (SERF) comagnetometer and proposes a method to measure and compensate for misalignment angles. By analyzing nuclear spin precession under varying bias magnetic field strengths, both the nuclear spin equivalent magnetic field ( $B_{n}$ ) and the misalignment angle $\theta $ between the pump beam and the main magnetic field are extracted. To suppress the identified misalignment, a novel alignment technique based on periodic strong magnetic field pulses is introduced. This method enables rapid in situ adjustment of the pump beam direction, thereby enhancing nuclear spin self-compensation and overall system performance. Experimental validation demonstrates that the proposed approach improves the suppression of transverse magnetic field interference, with a 43.2% enhancement in magnetic response attenuation. Additionally, magneto-optical alignment optimization results in marked improvements in system stability and sensitivity: the Allan deviation at 100 s is reduced by 34%, and the inertial measurement noise at 1 Hz decreases by 43.3%, achieving a sensitivity of $3.56\times {10^{ - 6}}{{\mathrm { }}^{\circ } }/\text {s}/\sqrt {\text {Hz}}$ .
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来源期刊
IEEE Transactions on Instrumentation and Measurement
IEEE Transactions on Instrumentation and Measurement 工程技术-工程:电子与电气
CiteScore
9.00
自引率
23.20%
发文量
1294
审稿时长
3.9 months
期刊介绍: Papers are sought that address innovative solutions to the development and use of electrical and electronic instruments and equipment to measure, monitor and/or record physical phenomena for the purpose of advancing measurement science, methods, functionality and applications. The scope of these papers may encompass: (1) theory, methodology, and practice of measurement; (2) design, development and evaluation of instrumentation and measurement systems and components used in generating, acquiring, conditioning and processing signals; (3) analysis, representation, display, and preservation of the information obtained from a set of measurements; and (4) scientific and technical support to establishment and maintenance of technical standards in the field of Instrumentation and Measurement.
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