Results 1 to 10 of about 236,571 (264)

Environment-Driven Synthetic Baseline Analysis and Optimization in Joint Measurement OPM-MEG Arrays [PDF]

Bioengineering
Optically pumped magnetometer-based magnetoencephalography (OPM-MEG), with its flexible sensor configuration and wide range of application scenarios, has become a powerful complement to conventional superconducting quantum interference device ...
Wenli Wang, Jianxin Yang, Weinan Xu, Fuzhi Cao, Nan An, Zhenfeng Gao, Min Xiang, Wen Li   +7 more
doaj   +2 more sources

Suppressing laser-power noise with a multifunctional liquid crystal polarization grating in miniaturized optically pumped magnetometers [PDF]

Microsystems & Nanoengineering
Optically pumped magnetometers (OPMs) enable high-resolution biomagnetic imaging, yet conventional single-beam designs are constrained by bulky, alignment-intensive polarization optics and susceptibility to laser-power noise.
Zhibo Cui, Xu Xiao, Zinan Wei, Zhimou Fu, Kun Huang, Liangsong Pei, Xiangyang Zhou, Zhen Chai, Dongbi Bai   +8 more
doaj   +2 more sources

Analysis and Correction of the Crosstalk Effect in a Three-Axis SERF Atomic Magnetometer

Photonics, 2022
Three-axis atomic magnetometers have an excellent advantage for determining the complete vector information of a magnetic field to be measured. However, the crosstalk effect, which leads to an error output on one axis owing to a magnetic field on the ...
Yeguang Yan, Jixi Lu, Binquan Zhou, Kun Wang, Ziao Liu, Xiaoyu Li, Weiyi Wang, Gang Liu   +7 more
doaj   +1 more source

The suppression of the probe laser pumping effect in SERF atomic magnetometer

Frontiers in Physics, 2023
Introduction: A spin exchange relaxation free atomic magnetometer, as an ultra-highly sensitive magnetic field sensor, is limited by the performance of the probe laser system.
Qian Cao, Yueyang Zhai, Yueyang Zhai, Binyue Huang, Renjie Li, Jiajie Li   +5 more
doaj   +1 more source

Measuring Magnetic Fields with Magnetic-Field-Insensitive Transitions [PDF]

Physical Review Letters, 2019
10+5 pages, 4+5 ...
Yotam Shapira, Yehonatan Dallal, Roee Ozeri, Ady Stern   +3 more
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Analysis and Suppression of the Cross-Axis Coupling Effect for Dual-Beam SERF Atomic Magnetometer

Photonics, 2022
Spin-exchange relaxation-free (SERF) atomic magnetometers operated under a near-zero magnetic field are used for vector magnetic field measurements with high sensitivity.
Fei Lu, Shuying Wang, Nuozhou Xu, Bo Li, Jixi Lu, Bangcheng Han   +5 more
doaj   +1 more source

A Novel Measurement Method for Spin Polarization Three Axis Spatial Distribution in Spin-Exchange Relaxation Free Atomic Magnetometer

Photonics, 2023
The measurement of atomic spin polarization distribution in spin-exchange relaxation free (SERF) magnetometer is an important topic for improving the sensitivity and consistency of multi-channel magnetic field measurement applications.
Xiujie Fang, Jin Li, Yanning Ma, Kai Wei, Wenfeng Fan, Yueyang Zhai, Wei Quan, Zhisong Xiao   +7 more
doaj   +1 more source

Precise Determination of Magnetic Gradient Relaxation of Coupled Atomic Spin Ensemble in Spin-Exchange Relaxation-Free Co-Magnetometer

Photonics, 2023
Inside a spin-exchange relaxation-free (SERF) co-magnetometer with a high-pressure buffer gas atomic cell, the magnetic field gradient causes the decoherence of atomic spins to produce magnetic-field gradient relaxation.
Xiujie Fang, Kai Wei, Wenfeng Fan, Siran Li, Qian Cao, Wei Quan, Yueyang Zhai, Zhisong Xiao   +7 more
doaj   +1 more source

Measuring huge magnetic fields [PDF]

Nature, 2002
Huge magnetic fields are predicted to exist in the high-density region of plasmas produced during intense laser-matter interaction, near the critical-density surface where most laser absorption occurs, but until now these fields have never been measured.
Tatarakis, M, Watts, I, Beg, F, Clark, E, Dangor, A, Gopal, A, Haines, MG, Norreys, P, Wagner, U, Wei, MS, Zepf, M, Krushelnick, K   +11 more
openaire   +2 more sources

On-Chip Mach-Zehnder-Like Interferometer for Atomic Spin Precession Detection

IEEE Photonics Journal, 2023
At present, most atomic spin precession detection schemes use discrete optical elements, which lead to bulky detection systems. However, chip-based spin precession detection schemes lack modulation, resulting in lower detection sensitivity. In this paper,
Zhibo Cui, Xiangyang Zhou, Dongbi Bai, Weiyi Wang, Zhen Chai   +4 more
doaj   +1 more source