Optically pumped magnetometers for biomagnetic measurements

Research output: Chapter in Book/Report/Conference proceedingChapter

6 Scopus citations


This review will summarize general aspects of optically pumped magnetometers and some of their features and challenges for applications to biomagnetic measurements. Such sensors rely on Larmor spin precession of optically polarized paramagnetic atoms in the magnetic field to be measured. Several optical magnetometry methods have been developed with sensitivity approaching or even exceeding that of SQUID magnetometers. Atomic sensors can be made quite compact, allowing measurements of magnetic fields closer to biomagnetic field sources. Present efforts are focused on the development of inexpensive systems with many small sensors that are robust in the presence of external magnetic field interference.

Original languageEnglish (US)
Title of host publicationFlexible High Performance Magnetic Field Sensors
Subtitle of host publicationOn-Scalp Magnetoencephalography and Other Applications
PublisherSpringer International Publishing
Number of pages13
ISBN (Electronic)9783031053634
ISBN (Print)9783031053627
StatePublished - Aug 26 2022

All Science Journal Classification (ASJC) codes

  • General Medicine
  • General Neuroscience
  • General Engineering
  • General Biochemistry, Genetics and Molecular Biology
  • General Chemistry
  • General Agricultural and Biological Sciences


  • Alkali metal magnetometer
  • Atomic magnetometer
  • Bloch equation
  • Optically pumped magnetometer
  • Scalar magnetometer
  • Shot noise
  • Spin exchange relaxation free
  • Spin projection noise
  • Vector magnetometer


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