Results 31 to 40 of about 699 (162)
Software program development of a high-precision magnetometer system for human-occupied vehicles [PDF]
Geoscientific Instrumentation, Methods and Data SystemsCesium optically pumped magnetometers are widely used in geophysical exploration, environmental monitoring, and scientific research for magnetic field measurements.
Q. Zhang +6 more
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Muscle fatigue revisited - Insights from optically pumped magnetometers [PDF]
Frontiers in Physiology, 2021 Abstract Muscle fatigue is well characterized electromyographically, nevertheless only information about summed potential differences is detectable. In contrast, recently developed quantum sensors optically pumped magnetometers (OPMs) offer the advantage of recording both the electrical current propagation in the muscle as well as its ...
Davide Sometti +30 more
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Triaxial closed-loop measurement based on a single-beam zero-field optically pumped magnetometer
Frontiers in Physics, 2022 In this study, we propose an approach for the simultaneous measurement of triaxial magnetic fields using a single-beam zero-field optically pumped atomic magnetometer, in which a rotational high-frequency (ω1) and another high-frequency (ω2) modulated ...
Kun Wang +14 more
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AIP Advances, 2023 Although vector potentials are more intrinsic physical quantities than magnetic and electric fields, measuring them macroscopically is difficult. A double-nested Helmholtz-type vector potential coil, consisting of an elongated solenoid coil wound around ...
Y. Shoji, M. Daibo
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Discrimination of finger movements by magnetomyography with optically pumped magnetometers
Scientific Reports, 2023 Abstract Optically pumped magnetometers (OPM) are quantum sensors that offer new possibilities to measure biomagnetic signals. Compared to the current standard surface electromyography (EMG), in magnetomyography (MMG), OPM sensors offer the advantage of contactless measurements of muscle activity.
Antonino Greco +6 more
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Polarization Measurement of Cs Using the Pump Laser Beam
IEEE Photonics Journal, 2017 In the optically pumped systems, the spin polarization of the atoms is generally derived by employing additional modulations, in which way an extra perturbation will be introduced and thus affect the normal operation of the sensors.
Rujie Li, Wei Quan, Jiancheng Fang
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Frequency Response of Optically Pumped Magnetometer with Nonlinear Zeeman Effect
Applied Sciences, 2020 Optically pumped alkali atomic magnetometers based on measuring the Zeeman shifts of the atomic energy levels are widely used in many applications because of their low noise and cryogen-free operation.
Rui Zhang +4 more
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A project for a new alkali vapour magnetometer, optically pumped by a diode laser
Annals of Geophysics, 1998 We present here a project for the industrial development of a new magnetometer that is intended to achieve the highest performance in measuring geomagnetic field.
A. Donati +8 more
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Micromachines, 2023 Optically pumped gradiometers have long been utilized in measurement in the International Geomagnetic Reference Field (IGRF). With advancements in technologies such as laser diodes and microfabrication, integrated gradiometers with compact sizes have ...
Haifeng Dong +3 more
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High Sample Rate Optically Pumped Helium Magnetometer [PDF]
Journal of Optoelectronical Nanostructures, 2019 Optically pumped helium magnetometers are important instruments whichhave many applications in military, mass spectroscopy and space applications. In thispaper, the working principles of helium magnetometers have been explained.
Abdorreza Asrar +2 more
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