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Prospects for production of ultracold \(\mathsf{X^{1}\Sigma^{ + }}\) RbCs molecules

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Abstract.

Recently, we have reported photoassociation of laser-cooled Rb and Cs atoms, decay of the RbCs photoassociation resonances to high levels of the \(a^{3}\Sigma^{ + }\) state, and reexcitation to vibronic levels of the \(c (2)^{3}\Sigma^{ + }\) state [Kerman et al. , Phys. Rev. Lett. 92, 033004; 153001 (2004)]. Considering the reexcitation spectrum, we report here a preliminary analysis of perturbations in the c state by high levels of the \(b^{3}\Pi\) and low levels of the \(B^{1}\Pi\) state. Mixing with the B state provides the singlet character needed to stimulate decay to v = 0 of the \(X^{1}\Sigma^{ + }\) ground state. We conclude that an experimental procedure that involves photoassociation of laser-cooled atoms, radiative decay, and stimulated Raman transfer to the ground electronic state is a feasible method for producing translationally, rotationally, vibrationally and electronically cold RbCs molecules.

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Authors and Affiliations

  1. Department of Physics and Astronomy, SUNY, NY 11794-3800, Stony Brook, USA

    T. Bergeman

  2. Department of Physics, Yale University, New Haven, CT, USA

    A. J. Kerman, J. Sage, S. Sainis & D. DeMille

Authors
  1. T. Bergeman
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  2. A. J. Kerman
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  3. J. Sage
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  4. S. Sainis
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  5. D. DeMille
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Correspondence to T. Bergeman.

Additional information

Received: 1 September 2004, Published online: 23 November 2004

PACS:

33.80.Ps Optical cooling of molecules; trapping - 34.50.Gb Electronic excitation and ionization of molecules; intermediate molecular states (including lifetimes, state mixing, etc.) - 33.20.Kf Visible spectra - 34.20.-b Interatomic and intermolecular potentials and forces, potential energy surfaces for collisions - 33.15.Pw Fine and hyperfine structure

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Bergeman, T., Kerman, A.J., Sage, J. et al. Prospects for production of ultracold \(\mathsf{X^{1}\Sigma^{ + }}\) RbCs molecules. Eur. Phys. J. D 31, 179–188 (2004). https://doi.org/10.1140/epjd/e2004-00155-6

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