Magnetic induction imaging with a cold-atom radio frequency magnetometer
Magnetic induction imaging with a cold-atom radio frequency magnetometer
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DOI：
10.1063/5.0020415
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发表时间：
2020-10-05
影响因子：
4
通讯作者：
Fioretti, A.
中科院分区：
文献类型：
--
作者：
Fregosi, A.;Gabbanini, C.;Fioretti, A.
静态或射频 (RF) 磁场的灵敏检测对于许多基础研究和应用至关重要。在这里，我们演示了基于冷原子的射频磁力计对小型金属物体进行一维和二维成像的操作。它基于冷 Rb-85 原子样品，在无主动场稳定的非屏蔽环境中运行。它在 5 - 35kHz 带宽范围内显示出高达 200pT/Hz 的灵敏度，并且可以解析 0.8mm 厚金属箔中 0.4mm 宽的切口。我们系统的特性使其成为民用和工业监控应用的良好候选者。
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 Rb-85 atomic sample and operates in an unshielded environment with no active field stabilization. It shows a sensitivity up to200pT / Hz in the5 - 35kHz bandwidth range and can resolve a 0.4mm wide cut in a 0.8mm thick metallic foil. The characteristics of our system make it a good candidate for applications in civil and industrial surveillance.