A compact, high performance atomic magnetometer for biomedical applications

作者：Vishal Shah, Ronald T. Wakai · 发表于：Physics in Medicine and Biology · 年份：2013 · DOI：10.1088/0031-9155/58/22/8153 · 被引用次数：326 · 研究领域：Atomic and Subatomic Physics Research、Advanced MRI Techniques and Applications、Advanced NMR Techniques and Applications

We present a highly sensitive room-temperature atomic magnetometer (AM), designed for use in biomedical applications. The magnetometer sensor head is only 2 × 2 × 5 cm3 and is constructed using readily available, low-cost optical components. The magnetic field resolution of the AM is <10 fT Hz–1/2, which is comparable to cryogenically cooled superconducting quantum interference device (SQUID) magnetometers. We present side-by-side comparisons between our AM and a SQUID magnetometer, and show that equally high quality magnetoencephalography and magnetocardiography recordings can be obtained using our AM.