Doppler cooling of buffer-gas-cooled Barium monofluoride molecules

TL;DR

This paper reports the successful implementation of one-dimensional Doppler cooling on buffer-gas cooled BaF molecules, with experimental and theoretical analysis guiding future cooling and trapping efforts.

Contribution

It demonstrates Doppler cooling of BaF molecules and validates the results with Monte Carlo simulations, advancing molecular cooling techniques.

Findings

Cooling efficiency depends on laser detuning, bias field, and laser intensity.

Experimental results agree with Monte Carlo simulations.

This work paves the way for further cooling and trapping of BaF molecules.

Abstract

We demonstrate one-dimensional Doppler cooling of a beam of buffer-gas cooled Barium monofluoride (BaF) molecules. The dependences of the cooling efficiency with the laser detuning, the bias filed and the laser intensity are carefully measured. We numerical simulate our experiment with a Monte Carlo method, and find the theoretic predictions consists with our experimental data. This result represents a key step towards further cooling and trapping of BaF molecules.