High-precision control of static magnetic field magnitude, orientation, and gradient using optically pumped vapour cell magnetometry

Abstract

An integrated system of hardware and software allowing precise definition of arbitrarily oriented magnetic fields up to |B| = 1 μT within a five-layer mumetal shield is described. The system is calibrated with reference to magnetic resonance observed between Zeeman states of the 6S${}_{1/2}$ F = 4 ${}^{133}$Cs ground state. Magnetic field definition over the full 4π solid angle is demonstrated, with one-sigma tolerances in magnitude, orientation and gradient of δ|B| = 0.94 nT, δθ = 5.9 mrad and δ$\nabla$ B = 13.0 pT/mm, respectively. This field control is used to empirically map Mx magnetometer signal amplitude as a function of the static field (B0) orientation.

14 pages, 10 figures

References in corpus (7)

• Theory of double resonance magnetometers based on atomic alignment
• Magnetometry Based on Nonlinear Magneto-Optical Rotation with Amplitude-Modulated Light
• Influence of magnetic-field inhomogeneity on nonlinear magneto-optical resonances
• 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
• A high-sensitivity push-pull magnetometer
• Measurement of a false electric dipole moment signal from ${}^{199}$Hg atoms exposed to an inhomogeneous magnetic field

Cited by in corpus (3)

• Sources of heading error in optically pumped magnetometers operated at Earth's magnetic field
• Vector Magnetometry Exploiting Phase-Geometry Effects in a Double-Resonance Alignment Magnetometer
• Orientational Effects on the Amplitude and Phase of Polarimeter Signals in Double Resonance Atomic Magnetometry