Orientational Effects on the Amplitude and Phase of Polarimeter Signals in Double Resonance Atomic Magnetometry

Abstract

Double resonance optically pumped magnetometry can be used to measure static magnetic fields with high sensitivity by detecting a resonant atomic spin response to a small oscillating field perturbation. Determination of the resonant frequency yields a scalar measurement of static field ($B_0$) magnitude. We present calculations and experimental data showing that the on-resonance polarimeter signal of light transmitted through an atomic vapour in arbitrarily oriented $B_0$ may be modelled by considering the evolution of alignment terms in atomic polarisation. We observe that the amplitude and phase of the magnetometer signal are highly dependent upon $B_0$ orientation, and present precise measurements of the distribution of these parameters over the full 4π solid angle.

References in corpus (4)

• All-Optical Vector Atomic Magnetometer
• Theory of double resonance magnetometers based on atomic alignment
• A large sample study of spin relaxation and magnetometric sensitivity of paraffin-coated Cs vapor cells
• Nonlinear magneto-optical rotation with modulated light in tilted magnetic fields

Cited by in corpus (1)

• Floquet description of Optically Pumped Magnetometers