The long-term goal of this research program is to develop an optical magnetometer array for use in fetal magnetocardiography (fMCG) and fetal magnetoencephalography (fMEG) systems. Optical/atomic magnetometers represent the first viable alternative to SQUID magnetometers; thus, the potential impact of the research on the field of biomagnetism is enormous. Utilization of fMCG and fMEG has been limited by the high cost of acquisition and maintenance associated with SQUID technology. The atomic magnetometer can mitigate these disadvantages while maintaining or even surpassing the magnetic field sensitivity of SQUID magnetometers.  We have recently demonstrated a novel, four-channel atomic biomagnetometer array for adult and fetal MCG studies.

Here is a fMCG signal we recently measured: