Measurement of Lande g factor of 5D5/2 state of BaII with a single trapped ion

TL;DR

This paper reports the first precise terrestrial measurement of the Lande g factor for the 5D5/2 state in singly ionized barium, using a single trapped ion and laser spectroscopy.

Contribution

It provides the first terrestrial measurement of the g factor of the 5D5/2 state in BaII using single-ion spectroscopy.

Findings

g factor measured as 1.2020±0.0005

Used laser spectroscopy on a single trapped ion

Achieved high precision in g factor determination

Abstract

We present the first terrestrial measurement of the Lande g factor of the 5D5/2 state of singly ionized barium. Measurements were performed on single Doppler-cooled 138Ba+ ions in a linear Paul trap. A frequency-stabilized fiber laser with nominal wavelength 1.762 um was scanned across the 6S1/2<->5D5/2 transition to spectroscopically resolve transitions between Zeeman sublevels of the ground and excited states. From the relative positions of the four narrow transitions observed at several different values for the applied magnetic field, we find a value of 1.2020+/-0.0005 for g of 5D5/2.