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.
Fregosi, A., Gabbanini, C., Gozzini, S., Lenci, L., Marinelli, C., Fioretti, A. (2020). Magnetic induction imaging with a cold-atom radio frequency magnetometer. APPLIED PHYSICS LETTERS, 117(14), 144102-1-144102-5 [10.1063/5.0020415].
Magnetic induction imaging with a cold-atom radio frequency magnetometer
Fregosi A.;Marinelli C.;
2020-01-01
Abstract
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.
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https://hdl.handle.net/11365/1118783