Driving the formation of the RbCs dimer by a laser pulse: A nonlinear-dynamics approach - Institut de Mathématiques de Marseille 2014- Accéder directement au contenu
Article Dans Une Revue Physical Review A : Atomic, molecular, and optical physics [1990-2015] Année : 2017

Driving the formation of the RbCs dimer by a laser pulse: A nonlinear-dynamics approach

Résumé

We study the formation of the RbCs molecule by an intense laser pulse using nonlinear dynamics. Under the Born-Oppenheimer approximation, the system is modeled by a two degree of freedom rovibrational Hamiltonian, which includes the ground electronic potential energy curve of the diatomic molecule and the interaction of the molecular polarizability with the electric field of the laser. As the laser intensity increases, we observe that the formation probability first increases and then decreases after reaching a maximum. We show that the analysis can be simplified to the investigation of the long-range interaction between the two atoms. We conclude that the formation is due to a very small change in the radial momentum of the dimer induced by the laser pulse. From this observation, we build a reduced one dimensional model which allows us to derive an approximate expression of the formation probability as a function of the laser intensity.
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Dates et versions

hal-01464718 , version 1 (10-02-2017)

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Cristel Chandre, Jorge Mahecha, J. Pablo Salas. Driving the formation of the RbCs dimer by a laser pulse: A nonlinear-dynamics approach. Physical Review A : Atomic, molecular, and optical physics [1990-2015], 2017, 95 (3), pp.033424. ⟨10.1103/PhysRevA.95.033424⟩. ⟨hal-01464718⟩
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