2013/07/09 by Vishal K. Shah, Ronald T. Wakai
Physics and Astronomy · #physics.ins-det #physics.med-ph
paper · pdf · doi:10.1088/0031-9155/58/22/8153
arxiv created 2013/07/09 · arxiv updated 2015/06/16
We present a highly sensitive room-temperature atomic magnetometer (AM), designed for use in biomedical applications. The magnetometer sensor head is only 2x2x5 cm3 and it is constructed using readily available, low-cost optical components. The magnetic field resolution of the AM is <10 fT/sqrt(Hz), 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 (MEG) and magnetocardiography (MCG) recordings can be obtained using our AM.