Doppler-free approach to optical pumping dynamics in the $6S_{1/2}- 5D_{5/2}$ electric quadrupole transition of Cesium vapor

TL;DR

This paper presents a Doppler-free spectroscopic method to study optical pumping dynamics and hyperfine structures in Cesium vapor's electric quadrupole transition, enabling advanced atomic and photonic research.

Contribution

It introduces a nonlinear Doppler-free spectroscopy technique for detailed analysis of the $6S_{1/2}-5D_{5/2}$ transition in Cesium vapor, revealing new insights into optical pumping and hyperfine interactions.

Findings

Resolved individual hyperfine lines in Doppler-free spectra.

Analyzed optical pumping dynamics and polarization rules.

Facilitated studies of light angular momentum transfer and metamaterials effects.

Abstract

The $6S_{1/2}-5D_{5/2}$ electric quadrupole transition is investigated in Cesium vapor at room temperature via nonlinear Doppler-free 6P-6S-5D three-level spectroscopy. Frequency-resolved studies of individual E2 hyperfine lines allow one to analyze optical pumping dynamics, polarization selection rules and line intensities. It opens the way to studies of transfer of light orbital angular momentum to atoms, and the influence of metamaterials on E2 line spectra.