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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Continuous Loading of Ultracold Ground-State Rb-85(2) Molecules in a Dipole Trap Using a Single Light Beam

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Passagem, Henry Fernandes [1] ; Colin-Rodriguez, Ricardo [1] ; Tallant, Jonathan [1] ; Ventura da Silva, Paulo Cesar [1] ; Bouloufa-Maafa, Nadia [2] ; Dulieu, Olivier [2] ; Marcassa, Luis Gustavo [1]
Total Authors: 7
[1] Univ Sao Paulo, Inst Fis Sao Carlos, Caixa Postal 369, BR-13560970 Sao Carlos, SP - Brazil
[2] Univ Paris Saclay, Univ Paris Sud, CNRS, Lab Aime Cotton, ENS Cachan, F-91405 Orsay - France
Total Affiliations: 2
Document type: Journal article
Source: Physical Review Letters; v. 122, n. 12 MAR 26 2019.
Web of Science Citations: 0

We have developed an approach to continuously load ultracold Rb-85(2) 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 v(X) = 0, and the optical trapping of these molecules. Furthermore, we probe by depletion spectroscopy and determine that 75% of the v(X) = 0 ground-state molecules are in the three lowest rotational levels J(X) = 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. (AU)

FAPESP's process: 11/23533-9 - Cold molecules in an optical lattice
Grantee:Jonathan Eugene Tallant
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 13/02816-8 - Manipulation of atomic collisions in optical traps
Grantee:Luis Gustavo Marcassa
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 14/24479-6 - KRb molecules in an optical dipole TRAP
Grantee:Paulo Cesar Ventura da Silva
Support Opportunities: Scholarships in Brazil - Master