Multi-parameter study of two-axis Hanle magnetometry on the Cs D$_1$ line

TL;DR

This study investigates how various parameters affect the performance of a two-axis Hanle magnetometer using Cs D$_1$ transition, combining experimental measurements with theoretical modeling to optimize its characteristics.

Contribution

The paper provides a comprehensive analysis of parameter impacts on a two-axis Hanle magnetometer and validates a theoretical model to optimize its performance.

Findings

Dispersion signals centered around zero can be obtained by specific polarization reflection and subtraction.

Theoretical model accurately reproduces experimental signals.

Optimization of magnetometer characteristics based on combined experimental and modeling insights.

Abstract

We have studied experimentally and theoretically the impact of various parameters on the characteristics of signals from a two-axis Hanle magnetometer based on the Cs D$_1$ transition illuminated by linearly polarized pump and probe beams propagating through the cell in such a way that the probe polarization vector can be switched between the $zy$- and the $xz$-plane in order to measure the magnetic field along the $x$- and $y$-axes, respectively. When the probe polarization additionally is reflected about the pump polarization vector and the two resulting absorption signals are subtracted, dispersion signals centered around zero are obtained. These dispersion signals can be reproduced accurately by the theoretical model, and the information from experiment and modeling used to optimize the magnetometer characteristics.