Development and characterization of a single-beam optically pumped magnetometer out of mass-producible components [PDF]
, 2022 Magnetic field detection based on optically pumped alkali-atom vapors is an attractive and potentially clinically translatable technology for biomagnetism studies, e.g. magnetoencephalography.
Blázquez Coído, Ana
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Beyond sensitivity: what are the enabling opportunities of OPM-MEG?
Frontiers in Medical TechnologyWhile optically-pumped magnetometer (OPM) technology offers a number of compelling advantages over its SQUID predecessor for magnetoencephalography (MEG), many studies and viewpoints focus on issues of (i) scalp placement, with commensurate increases in ...
Timothy P. L. Roberts +5 more
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Optically-pumped-magnetometer’s principle of operation.
, 2020 (1) The rubidium atoms of the vapor cell have randomly oriented atomic spins. (2) Using the circularly polarized pump-laser (795 nm), the spins are oriented in the propagation direction of the pump-laser, generating a macroscopic magnetization of Rb ...
Tony R. Carter (8357562) +8 more
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Measuring Human Auditory Evoked Fields with a Flexible Multi-Channel OPM-Based MEG System
Journal of Integrative NeuroscienceBackground: Magnetoencephalography (MEG) is a non-invasive imaging technique for directly measuring the external magnetic field generated from synchronously activated pyramidal neurons in the brain.
Xin Zhang +14 more
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Optically pumped vector magnetometer using a strong bias magnetic field [PDF]
We present a novel approach allowing an optically pumped magnetometer (OPM) to be operated within Earth\u27s magnetic field as a vector magnetometer whose sensitive axis can be freely defined. This approach enables the measurement of any vector component
Hiebel, Stefan +6 more
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Human MCG measurements with an ultrasensitive optically-pumped atomic magnetometer [PDF]
, 2011 本文データは学協会の許諾に基づきCiNiiから複製したものである脳磁図(MEG)や心磁図(MCG)等の生体磁気信号計測は, 生体機能の解明や疾患等の診断に用いられる非侵襲的計測・イメージングモダリティの中でも重要な役割を担っている.我々は生体磁気信号計測を目標として超高感度光ポンピング原子磁気センサシステムを開発している.本研究では, ヒトのMCGを計測する上で十分な感度を有したカリウム原子磁気センサを構築しMCG計測を行った.計測信号に対しては, 原子磁気センサの周波数応答を考慮した波形の復元を行った.
鎌田, 啓吾 +2 more
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Digital servo system based on FPGA for optically pumped magnetometer
, 2015 This paper describes the design and implementation of a digital servo system based on FPGA for one optically pumped magnetometer. The digital servo system based on FPGA incorporates an analog to digital converter, a digital to analog converter and a ...
Chang Liu +7 more
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High sensitivity magnetometry: A new optically pumped potassium vapor magnetometer
, 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. The instrument is based on the well-known technology of optically pumped alkali
O. FAGGIONI +8 more
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A modular optically pumped magnetometer system [PDF]
To address the demands in healthcare and industrial settings for spatially resolved magnetic imaging, we present a modular optically pumped magnetometer (OPM) system comprising a multi-sensor array of highly sensitive quantum magnetometers.
Abel, Christopher +10 more
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Spatial frequency isotropy of an optically pumped
, 2001 Optically pumped magnetometers are scalar magnetometers which are particularly suitable for mobile applications for which it is necessary to use an isotropic sensor.
H. Gilles, B. Chéron, J. Hamel
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