Abstract : We measure the angular divergence of a quasi-continuous, rf-outcoupled, free-falling atom laser as a function of the outcoupling frequency. The data is compared to a Gaussian-beam model of laser propagation that generalizes the standard formalism of photonic lasers. Our treatment includes diffraction, magnetic lensing, and interaction between the atom laser and the condensate. We find that the dominant source of divergence is the condensate-laser interaction.
https://hal.archives-ouvertes.fr/hal-00116293
Contributor : Fabrice Gerbier <>
Submitted on : Friday, April 15, 2016 - 9:58:07 AM Last modification on : Thursday, November 5, 2020 - 11:24:12 AM Long-term archiving on: : Tuesday, November 15, 2016 - 4:05:31 AM
Yann Le Coq, Joseph H. Thywissen, Sadiq A. Rangwala, Fabrice Gerbier, Simon Richard, et al.. Atom laser divergence. Physical Review Letters, American Physical Society, 2001, 87, pp.170403. ⟨10.1103/PhysRevLett.87.170403⟩. ⟨hal-00116293⟩