# Mollow triplet in cold atoms

## TL;DR

This paper experimentally measures the Mollow triplet spectrum in cold atoms using heterodyne spectroscopy, comparing results with theory and analyzing effects of temperature and beam size.

## Contribution

It provides the first detailed experimental observation of the Mollow triplet in cold atomic clouds with quantitative comparison to theoretical models.

## Key findings

- Mollow triplet observed at resonance in cold atoms
- Good agreement between experiment and theory off resonance
- Temperature and beam size influence the spectral features

## Abstract

In this paper, we measure the spectrum of light scattered by a cold atomic cloud driven by a strong laser beam. The experimental technique is based on heterodyne spectroscopy coupled to single-photon detectors and intensity correlations. At resonance, we observe the Mollow triplet. This spectrum is quantitatively compared to the theoretical one, emphasizing the influence of the temperature of the cloud and the finite-size of the laser beam. Off resonance measurements are also done showing a very good agreement with theory.