Scientific Results

Formation of ultracold metastable RbCs molecules by short-range photoassociation

Year: 2011

Authors: Gabbanini C., Dulieu O.

Autors Affiliation: Istituto Nazionale di Ottica, INO-CNR, U.O.S. Pisa Adriano Gozzini, Via Moruzzi 1, 56124 Pisa, Italy; Laboratoire Aimé Cotton, CNRS, Univ Paris-Sud, Bât. 505, F-91405 Orsay Cedex, France

Abstract: Ultracold metastable RbCs molecules are observed in a double species magneto-optical trap through photoassociation near the Rb(5S(1/2)) + Cs(6P(3/2)) dissociation limit followed by radiative stabilization. The molecules are formed in their lowest triplet electronic state and are detected by resonance enhanced two-photon ionization through the previously unobserved (3)(3)Pi <- a(3)Sigma(+) band. The large rotational structure of the observed photoassociation lines is assigned to the lowest vibrational levels of the 0(+) or 0(-) excited states correlated to the Rb(5P(1/2)) + Cs(6S(1/2)) dissociation limit. This demonstrates the possibility of inducing direct photoassociation in heteronuclear alkali-metal molecules at a short internuclear distance, as pointed out earlier [J. Deiglmayr et al., Phys. Rev. Lett., 2008, 101, 13304]. Journal/Review:

Volume: 13 (42)      Pages from: 18905  to: 18909

KeyWords: ultracold molecules; photoassociation;
DOI: 10.1039/c1cp21497g

Citations: 38
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English