Wide range and highly sensitive atomic magnetometry with Rb vapor

TL;DR

This paper presents a highly sensitive atomic magnetometry technique using Rb vapor, achieving efficient magnetic field detection through Faraday rotation without special cell coatings.

Contribution

The study introduces a novel Rb vapor-based magnetometry method that operates effectively without paraffin-coated cells, enhancing sensitivity and simplicity.

Findings

Achieved linear Faraday rotation of about 25 microT

Used ordinary vapor cell without paraffin coating

Demonstrated high atomic response to weak magnetic fields

Abstract

We have developed a technique in which Rb atomic response to weak magnetic field is high and an efficient rotation of linearly polarized laser beam results in efficient magnetometry. 85Rb isotope has been used for the magnetometry in an ordinary vapor cell without any paraffin coating to its inner wall. A linear regime of Faraday rotation of about 25 microT has been observed with atomic number density within the vapor cell of about 10^9 cm-3.