Laser cooling of rotation and vibration by optical pumping

I. Manai*, R. Horchani, M. Hamamda, A. Fioretti, M. Allegrini, H. Lignier, P. Pillet, D. Comparat

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


We have recently demonstrated that optical pumping methods combined with photo-association of ultra-cold atoms can produce ultra-cold and dense samples of molecules in their absolute rovibronic ground state. More generally, both the external and internal degrees of freedom can be cooled by addressing selected rovibrational levels on demand. Here, we recall the basic concepts and main steps of our experiments, including the excitation schemes and detection techniques we use to achieve the rovibrational cooling of Cs2 molecules. In addition, we present the determination of formation pathways and a theoretical analysis explaining the experimental observations. These simulations improve the spectroscopic knowledge required to transfer molecules to any desired rovibrational level.

Original languageEnglish
Pages (from-to)1844-1854
Number of pages11
JournalMolecular Physics
Issue number12-13
Publication statusPublished - Jul 1 2013
Externally publishedYes


  • molecular spectroscopy
  • optical pumping
  • photo-association
  • ultra-cold molecules
  • vibrational and rotational cooling

ASJC Scopus subject areas

  • Biophysics
  • Molecular Biology
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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