BRAGG SCATTERING FROM ATOMS IN OPTICAL LATTICES

Citation
G. Birkl et al., BRAGG SCATTERING FROM ATOMS IN OPTICAL LATTICES, Physical review letters, 75(15), 1995, pp. 2823-2826
Citations number
16
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
ISSN journal
0031-9007
Volume
75
Issue
15
Year of publication
1995
Pages
2823 - 2826
Database
ISI
SICI code
0031-9007(1995)75:15<2823:BSFAIO>2.0.ZU;2-9
Abstract
We observe coherently enhanced reflection (Bragg scattering) of a near resonant laser beam from cesium atoms ordered by a periodic array of optical potential wells known as an optical lattice. The reflected lig ht is enhanced by a factor of similar to 10(5) over scattering from a disordered atomic sample. We measure the magnitude of the reflectivity and its detuning dependence as functions of the density and the degre e of localization of the atoms. The change in lattice constant due to the frequency-dependent effective index of refraction seen by the latt ice light field is observed.