[Spectroscopie par photoassociation d'atomes ultra-froids de molécules de grande élongation]
La spectroscopie des molécules dites « de grande élongation », pour lesquelles la distance interatomique est considérablement plus grande qu'elle ne l'est habituellement dans la liaison chimique peut être réalisée par photoassociation d'atomes ultra-froids. Nous présentons ici une synthèse des résultats obtenus par spectroscopie de photoassociation à un et à deux photons pour la molécules de Cs2. Les potentiels excités concernés sont les potentiels 0g− et 1u, corrélés à la limite asymptotique (6s+6p3/2). Tous les résultats obtenus ont été interprétés dans une approche théorique asymptotique, spécialement développée pour l'étude de ces molécules de grande élongation.
Spectroscopic study of so-called long-range molecules, with average interatomic distances much larger than usual for chemical bonds, is conveniently performed by photoassociation (PA) of ultracold atoms. We present here a review of our results obtained by one and two-photon PA spectroscopy of the Cs2 molecule, using as intermediate the 0g− and 1u potentials correlated to the (6s+6p3/2) asymptote. These results have been interpreted using an asymptotic theoretical approach, which was specifically build for such long-range molecules.
Mot clés : Photoassociation, Refroidissement laser, Piégeage d'atomes, Spectroscopie, Potentiel asymptotique, Molécules de grande élongation, Césium, Structure hyperfine
Nicolas Vanhaecke 1 ; Daniel Comparat 1 ; Anne Crubellier 1 ; Pierre Pillet 1
@article{CRPHYS_2004__5_2_161_0,
author = {Nicolas Vanhaecke and Daniel Comparat and Anne Crubellier and Pierre Pillet},
title = {Photoassociation spectroscopy of ultra-cold long-range molecules},
journal = {Comptes Rendus. Physique},
pages = {161--169},
publisher = {Elsevier},
volume = {5},
number = {2},
year = {2004},
doi = {10.1016/j.crhy.2004.01.018},
language = {en},
}
TY - JOUR AU - Nicolas Vanhaecke AU - Daniel Comparat AU - Anne Crubellier AU - Pierre Pillet TI - Photoassociation spectroscopy of ultra-cold long-range molecules JO - Comptes Rendus. Physique PY - 2004 SP - 161 EP - 169 VL - 5 IS - 2 PB - Elsevier DO - 10.1016/j.crhy.2004.01.018 LA - en ID - CRPHYS_2004__5_2_161_0 ER -
Nicolas Vanhaecke; Daniel Comparat; Anne Crubellier; Pierre Pillet. Photoassociation spectroscopy of ultra-cold long-range molecules. Comptes Rendus. Physique, Volume 5 (2004) no. 2, pp. 161-169. doi : 10.1016/j.crhy.2004.01.018. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2004.01.018/
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