Enhancing molecular formation in a Rb-MOT |
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Authors: | L G Marcassa V A Nascimento L L Caliri A Caires D V Magalhães V S Bagnato |
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Institution: | 1. Instituto de Física de S?o Carlos, Universidade de S?o Paulo, Caixa Postal 369, S?o Carlos-SP, 13560-970, Brazil 2. Brazilian Academy of Science, Rua Anfilyfio de Carvalho, 29, 30 Andar, Rio de Janeiro, RJ, 20030-060, Brazil
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Abstract: | In this paper, we report observation of an enhancement of the ground state molecule Rb2 formation in a Rb magneto-optical trap due to a photoassociation laser. Such an enhancement effect is due to flux enhancement of atomic pairs at short internuclear distances. Our experimental observations consist in the measurement of the molecular formation rate constant due to a probe laser as a function of the trap laser intensity. The results are compared with a simple semi-classical model, showing good agreement. We conclude that the production of cold Rb2 may be enhanced using appropriate laser parameters; this may be useful for future experiments involving production and trapping of ultracold ground state molecules. |
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