We discuss the role of diffuse, Mie, and cooperative scattering on the radiation pressure force acting on the center of mass of a cloud of cold atoms. Even though a mean-field ansatz (the “timed Dicke state”), previously derived from a cooperative scattering approach, has been shown to agree satisfactorily with experiments, diffuse scattering also describes very well most features of the radiation pressure force on large atomic clouds. We compare in detail an incoherent, random walk model for photons and a diffraction approach to the more complete description based on coherently coupled dipoles. We show that a cooperative scattering approach, although it provides a quite complete description of the scattering process, is not necessary to explain the previous experiments on the radiation pressure force.
Collective effects in the radiation pressure force / R. Bachelard, N. Piovella, W. Guerin, R. Kaiser. - In: PHYSICAL REVIEW A. - ISSN 2469-9926. - 94:3(2016 Sep 20).
|Titolo:||Collective effects in the radiation pressure force|
PIOVELLA, NICOLA UMBERTO CESARE (Secondo)
|Settore Scientifico Disciplinare:||Settore FIS/03 - Fisica della Materia|
|Data di pubblicazione:||20-set-2016|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1103/PhysRevA.94.033836|
|Appare nelle tipologie:||01 - Articolo su periodico|