Hybrid optical pumping of K and Rb atoms in a paraffin coated vapor cell

TL;DR

This paper demonstrates a hybrid optical pumping technique in a dual-species vapor cell that achieves ultra-narrow magnetic resonance linewidths and immunity to power broadening, advancing atomic magnetometry.

Contribution

It introduces a novel hybrid optical pumping scheme using K and Rb atoms in a paraffin coated cell, improving magnetic resonance properties for magnetometry.

Findings

Achieved a 3 Hz intrinsic magnetic resonance linewidth.

Resonance is immune to power broadening and light-shift effects.

Demonstrated potential for enhanced atomic magnetometry applications.

Abstract

Dynamic hybrid optical pumping effects with a radio-frequency-field-driven nonlinear magneto-optical rotation (RF NMOR) scheme are studied in a dual-species paraffin coated vapor cell. By pumping K atoms and probing $^{87}$Rb atoms, we achieve an intrinsic magnetic resonance linewidth of 3 Hz and the observed resonance is immune to power broadening and light-shift effects. Such operation scheme shows favorable prospects for atomic magnetometry applications.