Magnetometer suitable for Earth field measurement based on transient atomic response

Abstract

We describe the development of a simple atomic magnetometer using ${}^{87}$Rb vapor suitable for Earth magnetic field monitoring. The magnetometer is based on time-domain determination of the transient precession frequency of the atomic alignment around the measured field. A sensitivity of 1.5 nT/$\sqrt{Hz}$ is demonstrated on the measurement of the Earth magnetic field in the laboratory. We discuss the different parameters determining the magnetometer precision and accuracy and predict a sensitivity of 30 pT/$\sqrt{Hz}$

6 pages, 5 figures

References in corpus (6)

• Optical Magnetometry
• Nonlinear magneto-optical rotation with frequency-modulated light in the geophysical field range
• Influence of magnetic-field inhomogeneity on nonlinear magneto-optical resonances
• Nonlinear magneto-optical rotation with modulated light in tilted magnetic fields
• All optical sensor for automated magnetometry based on Coherent Population Trapping
• Production and detection of atomic hexadecapole at Earth's magnetic field

Cited by in corpus (6)

• Multichannel optical atomic magnetometer operating in unshielded environment
• Vectorial atomic magnetometer based on coherent transients of laser absorption in Rb vapor
• Light storage via coherent population oscillation in a thermal cesium vapor
• Transient dynamics of nonlinear magneto-optical rotation
• High-precision control of static magnetic field magnitude, orientation, and gradient using optically pumped vapour cell magnetometry
• Tri-axial time-dependent magnetic field calibrated in-situ by harmonic analysis of adiabatically evolving atomic spins