Interplay between radiation pressure force and scattered light intensity in the cooperative scattering by cold atoms
Articolo
Data di Pubblicazione:
2014
Citazione:
Interplay between radiation pressure force and scattered light intensity in the cooperative scattering by cold atoms / T. Bienaimé, R. Bachelard, J. Chabé, M. Rouabah, L. Bellando, P. Courteille, N. Piovella, R. Kaiser. - In: JOURNAL OF MODERN OPTICS. - ISSN 0950-0340. - 61:1(2014), pp. 1-7. [10.1080/09500340.2013.829264]
Abstract:
When a cold atomic gas is illuminated by a quasi-resonant laser beam,
light-induced dipole–dipole correlations make the scattering of light a cooperative process. Once a fluid description is adopted for the atoms, many scattering properties
are captured by the definition of a complex refractive index. The solution of the scattering problem is here presented for spherical atomic clouds of arbitrary density profiles, such as parabolic densities characteristic of ultra-cold clouds. A new solution for clouds with infinite boundaries is derived, which is particularly useful for the Gaussian densities of thermal atomic clouds. The presence of Mie resonances, a signature of the cloud acting as a cavity for the light, is discussed. These resonances leave their fingerprint in various observables such as the scattered intensity or in the radiation pressure force, and can be observed by tuning the frequency of the
incident laser field or the atom number.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
cold atoms; cooperative scattering; Dicke superradiance
Elenco autori:
T. Bienaimé, R. Bachelard, J. Chabé, M. Rouabah, L. Bellando, P. Courteille, N. Piovella, R. Kaiser
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