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Lecture notes in physics

Cold Atom Magnetometers

Yujiro Eto, Mark Sadrove, Takuya Hirano

Published Dec 29, 2015• 0 citations
Publisher
DOI
10.1007/978-4-431-55756-2_6

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The sensitive detection of either static or radio frequency (RF) magnetic fields is essential to many fundamental studies and applications. Here, we demonstrate the operation of a cold-atom-based RF magnetometer in performing 1D and 2D imaging of small metallic objects. It is based on a cold 85Rb atomic sample and operates in an unshielded environment with no active field stabilization. It shows a sensitivity up to 200 pT/Hz in the 5−35 kHz bandwidth range and can resolve a 0.4 mm wide cut in a 0.8 mm thick metallic foil. The characteristics of our system make it a good candidate for applications in civil and industrial surveillance.