首页|Magnetic field imaging with radio-frequency optically pumped magnetometers[Invited]
Magnetic field imaging with radio-frequency optically pumped magnetometers[Invited]
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High-sensitivity radio-frequency optically pumped magnetometers[RF-OPMs],working without cryogenic condition,play a critical role in magnetic field imaging[MFI]at low frequencies[e.g.,100 Hz to 1 MHz].We introduce the principle of operation and recent developments of RF-OPMs and focus on reviewing the MFI applications in magnetic induction tomography,ultra-low-field magnetic resonance imaging,and magnetic particle imaging.For the applications of RF-OPMs,ranging from indus-trial monitoring to medical imaging and security screening,the unshielded and portable RF-OPMs[and RF-OPM array]techniques are still under the further development for detecting and scanning over the target object for accomplishing the final three-dimensional imaging,and thus extremely require the abilities of active compensation of the ambient mag-netic field and sensor miniaturization in the future.
magnetic field imagingradio frequencyoptically pumped magnetometer
刘曦屿、韩俊龙、肖伟、吴腾、彭翔、郭弘
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School of Electronics,Peking University,Beijing 100871,China
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