Sensitivity of double resonance alignment magnetometers

Abstract

We present an experimental study of the intrinsic magnetometric sensitivity of an optical/rf-frequency double resonance magnetometer in which linearly polarized laser light is used in the optical pumping and detection processes. We show that a semi-empirical model of the magnetometer can be used to describe the magnetic resonance spectra. Then, we present an efficient method to predict the optimum operating point of the magnetometer, i.e., the light power and rf Rabi frequency providing maximum magnetometric sensitivity. Finally, we apply the method to investigate the evolution of the optimum operating point with temperature. The method is very efficient to determine relaxation rates and thus allowed us to determine the three collisional disalignment cross sections for the components of the alignment tensor. Both first and second harmonic signals from the magnetometer are considered and compared.

References in corpus (6)

• Resonant nonlinear magneto-optical effects in atoms
• Investigation of microwave transitions and nonlinear magneto-optical rotation in anti-relaxation-coated cells
• Theory of double resonance magnetometers based on atomic alignment
• Influence of magnetic-field inhomogeneity on nonlinear magneto-optical resonances
• Optimization and performance of an optical cardio-magnetometer
• Experimental study of laser detected magnetic resonance based on atomic alignment

Cited by in corpus (7)

• Squeezed-Light Optical Magnetometry
• A large sample study of spin relaxation and magnetometric sensitivity of paraffin-coated Cs vapor cells
• A Single-species Atomic Comagnetometer Based on 87Rb atoms
• Magnetometric sensitivity optimization for nonlinear optical rotation with frequency-modulated light: rubidium D2 line
• Zero-field optical magnetometer based on spin-alignment
• Optically driven spin-alignment precession
• Phase-modulated cavity magnon polaritons as a precise magnetic field probe