Three-axis atomic magnetometer for nuclear magnetic resonance gyroscopes

Qiu, Xuyang; Xu, Zhengyi; Peng, Xinxin; Li, Lianhua; Zhou, Yinmin; Wei, Mengmeng; Zhou, Min; Xu, Xiaojun

doi:10.1063/1.5139040

Cited by 24 publications

(9 citation statements)

References 16 publications

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“…We note that a typical SERF-based atomic magnetometer has a 3 dB bandwidth of about 100 Hz. 5) In our experiment, the measured bandwidths are greater than 2 kHz along the three axes, as shown in Fig. 5(b).…”

Section: -3supporting

confidence: 51%

“…In the future, we will try to boost the sensitivity with a lower noise magnetic shield, 34) higher quality anti-relaxation-coated vapor cells, 23) or multi-pass configuration. 35) By scanning the frequency of the test magnetic field and measuring the corresponding response amplitude along three axes, 5) we measure the 3 dB bandwidth of the dual-beam magnetometer in different directions. We note that a typical SERF-based atomic magnetometer has a 3 dB bandwidth of about 100 Hz.…”

Section: -3mentioning

confidence: 99%

“…igh-sensitivity atomic magnetometers (AMs) have found broad applications, including geophysical applications, 1) magnetic anomaly detection (MAD), 2) detection of nuclear magnetic resonance (NMR), [3][4][5] magnetocardiography (MCG) and magnetoencephalography, [6][7][8][9] sensitive searches for exotic physics, 10) and electromagnetic induction imaging. 11,12) Among the different configurations of AMs, 13,14) currently the two most commonly used schemes are nonlinear magneto-optical rotation (NMOR) [15][16][17] and spinexchange relaxation-free (SERF) [18][19][20][21][22] AMs.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Dual-beam room-temperature atomic magnetometer with high sensitivity and large dynamic range

Liu¹,

Peng²,

Wang³

et al. 2023

Appl. Phys. Express

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We demonstrate a dual-beam high-sensitivity room temperature atomic magnetometer (AM) with large dynamic range based on nonlinear magneto-optical rotation (NMOR) enhancing scheme. Using an inelastic wave-mixing laser, we find significant NMOR signal enhancement compared with a single-beam scheme under the same far-detuned operation conditions. This dual-beam scheme is taken to operate well in the regime of lower laser intensity and off-resonance detuning. The best sensitivity achieved is 20 fT/Hz1/2 with a bandwidth of 2 kHz, substantially greater than common spin exchange relaxation free AMs. This gives a pathway to develop low-power, inexpensive miniaturized AMs for wide application.

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Section: -3supporting

confidence: 51%

Section: -3mentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Dual-beam room-temperature atomic magnetometer with high sensitivity and large dynamic range

Liu¹,

Peng²,

Wang³

et al. 2023

Appl. Phys. Express

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“…As an example of multiparameter atomic sensor, vector magnetometer is under active research for it provides more complete information than its scalar counterpart and has applications in biosciences, geophysics etc. To attain the magnetic field's orientation, the sensor needs to incorporate various axial references, such as field compensation coils [28], RF fields [29][30][31], multiple crossing laser beams [32][33][34][35][36], which all inevitably complicates the setup. Also, in many schemes the three-dimensional information is obtained successively [29,37], or through sweeping the atomic resonance spectra [38,39], which may not be suitable for real-time field measurement [36].…”

Section: Introductionmentioning

confidence: 99%

Machine Learning Assisted Vector Atomic Magnetometry

Meng¹,

Zhang²,

Zhang³

et al. 2023

Preprint

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We propose a novel paradigm to vector magnetometry based on machine learning. Unlike conventional schemes where one measured signal explicitly connects to one parameter, here we encode the three-dimensional magnetic-field information in the set of four simultaneously acquired signals, i.e., the oscillating optical rotation signal's harmonics of a frequency modulated laser beam traversing the atomic sample. The map between the recorded signals and the vectorial field information is established through a pre-trained deep neural network. We demonstrate experimentally a single-shot all optical vector atomic magnetometer, with a simple scalar-magnetometer design employing only one elliptically-polarized laser beam and no additional coils. Magnetic field amplitude sensitivities of about 100 fT/ √ Hz and angular sensitivities of about 100 µrad/ √ Hz (for a magnetic field of about 140 nT) are derived from the neural network. Our approach can reduce the complexity of the architecture of vector magnetometers, and may shed light on the general design of multiparameter sensing.

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“…[3][4][5][6] To date, atomic magnetometers featured in miniaturization, high sensitivity and cryogenfree have become promising alternatives to superconductor quantum interference device (SQUID) magnetometers in bio-magnetic measurements such as magnetoencephalography (MEG) and magnetocardiography (MCG). [7,8] Atomic magnetometers operated in zero-field are implemented in many configurations to satisfy the various applications, including magnetometers based on crossed pumpprobe beams, [9][10][11] nearly parallel pump-probe beams, [12] single elliptically polarized light, [13,14] single circularly polarized light, [15,16] as well as schemes with multi-channel [17,18] and gradiometer. [19] Among these configurations, single-beam magnetometers have been widely applied in MEG and MCG with considerably less cost and reduction of volume.…”

Section: Introductionmentioning

confidence: 99%

Dynamic range and linearity improvement for zero-field single-beam atomic magnetometer

Yin¹,

Lu²,

Lu³

et al. 2022

Chinese Phys. B

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Zero-field single-beam atomic magnetometers with transverse parametric modulation for ultra-weak magnetic field detection have attracted widespread attention recently. In this study, we present a comprehensive response model and propose a modification method of conventional first harmonic response by introducing the second harmonic correction. The proposed modification method gives improvement in dynamic range and reduction of linearity error. Additionally, our modification method shows suppression of response instability caused by optical intensity and frequency fluctuations. An atomic magnetometer with single-beam configuration is built to compare the performance between our proposed method and the conventional method. The results indicate that our method's magnetic field response signal achieves a 5-fold expansion of dynamic range from 2 nT to 10 nT, with the linearity error decreased from 5% to 1%. Under the fluctuations of 5% for optical intensity and ±15 GHz detuning of frequency, the proposed modification method maintains intensity-related instability < 1% and frequency-related instability < 8% while the conventional method suffers 15% and 38% respectively. Our method is promising for future high-sensitive and long-term stable optically pumped atomic sensors.

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Three-axis atomic magnetometer for nuclear magnetic resonance gyroscopes

Cited by 24 publications

References 16 publications

Dual-beam room-temperature atomic magnetometer with high sensitivity and large dynamic range

Dual-beam room-temperature atomic magnetometer with high sensitivity and large dynamic range

Machine Learning Assisted Vector Atomic Magnetometry

Dynamic range and linearity improvement for zero-field single-beam atomic magnetometer

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