Abstract – Publication

Continuous loading of ultracold ground-state 85Rb2 molecules in a dipole trap using a single light beam.
PASSAGEM, Henry Fernandes; COLÍN-RODRÍGUEZ, Ricardo; TALLANT, Jonathan; SILVA, Paulo Cesar Ventura da; BOULOUFA-MAAFA, Nadia; DULIEU, Olivier; MARCASSA, Luís Gustavo.
Abstract: We have developed an approach to continuously load ultracold 85Rb2 vibrational ground-state molecules into a crossed optical dipole trap from a magneto-optical trap. The technique relies on a single high-power light beam with a broad spectrum superimposed onto a narrow peak at an energy of about 9400 cm-1. This single laser source performs all the required steps: the short-range photoassociation creating ground-state molecules after radiative emission, the cooling of the molecular vibrational population down to the lowest vibrational level vX ¼ 0, and the optical trapping of these molecules. Furthermore, we probe by depletion spectroscopy and determine that 75% of the vX ¼ 0 ground-state molecules are in the three lowest rotational levels JX ¼ 0, 1, 2. The lifetime of the ultracold molecules in the optical dipole trap is limited to about 70 ms by off-resonant light scattering. The proposed technique opens perspectives for the formation of new molecular species in the ultracold domain, which are not yet accessible by well-established approaches.
Physical Review Letters
v. 122, n. 12, p. 123401-1-123401-6 - Ano: 2019
Fator de Impacto: 8,839
http://dx.doi.org/10.1103/PhysRevLett.122.123401
    @article={002937852,author = {PASSAGEM, Henry Fernandes; COLÍN-RODRÍGUEZ, Ricardo; TALLANT, Jonathan; SILVA, Paulo Cesar Ventura da; BOULOUFA-MAAFA, Nadia; DULIEU, Olivier; MARCASSA, Luís Gustavo.},title={Continuous loading of ultracold ground-state 85Rb2 molecules in a dipole trap using a single light beam},journal={Physical Review Letters},note={v. 122, n. 12, p. 123401-1-123401-6},year={2019}}

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