Abstract

We report on a fast, nondestructive and sensitive measurement technique that uses atomic spin precession and non-destructive Faraday rotation probing to measure all three components of the magnetic field with kHz bandwidth. In contrast to other vector magnetometer techniques that modulate an applied magnetic field [1, 2, 3] we modulate the initial atomic polarization and extract the magnetic field components from the resulting free-induction decay (FID) signal, monitored via paramagnetic Faraday rotation.

© 2013 IEEE