Chinese Optics Letters, Volume. 22, Issue 6, (2024)

Magnetic Field Imaging with Radio-frequency Optically Pumped Magnetometers [Early Posting]

Liu Xiyu, Han Junlong, Xiao Wei, Wu Teng, Peng X., Guo Hong
Author Affiliations
  • China
  • Peking University
  • Peking Univ
  • 北京大学信息科学技术学院
  • show less

    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 $\sim$ 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 (MIT), ultra-low-field magnetic resonance imaging (ULF-MRI), and magnetic particle imaging (MPI). For the applications of RF-OPMs, ranging from industrial 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 magnetic field and sensor miniaturization in the future.

    Paper Information

    Manuscript Accepted: Mar. 18, 2024

    Posted: Apr. 1, 2024

    DOI: 10.3788/COL202422.060006