optically pumped magnetometer

optically pumped magnetometer

[′äp·tə·klē ¦pəmpt ‚mag·nə′täm·əd·ər]
(engineering)
A type of magnetometer that measures total magnetic field intensity by observation of the precession frequency of magnetic atoms, usually gaseous rubidium, cesium, or helium, which are magnetized by irradiation with circularly polarized light of a suitable wavelength.
References in periodicals archive ?
However, a scalar magnetic sensor such as an optically pumped magnetometer has an important advantage in that it is relatively insensitive to its orientation.
CardioFlux represents a next-gen evolution of magnetocardiography (MCG); its use of optically pumped magnetometers (OPM) eliminates the need for liquid helium cooling, previously an obstacle to widescale commercial adoption of MCG.
Such optically pumped magnetometers, in addition to high sensitivity, offer advantages such as room-temperature operation, small size, low power and cost, and reduced interference.
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