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Publication Citation: Raman-induced Avoided Crossings in Adiabatic Optical Potentials: Observation of λ8 Spatial Frequency in the Distribution of Atoms

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Author(s): R Gupta; Jabez J. McClelland; Robert Celotta; P Marte;
Title: Raman-induced Avoided Crossings in Adiabatic Optical Potentials: Observation of λ8 Spatial Frequency in the Distribution of Atoms
Published: June 17, 1996
Abstract: Chromium atoms traverse an optical potential and the resulting spatial distribution is measured by a new method. Atoms are collected on a substrate and an atomic force microscope is used to determine the flux as a function of position. An unexpectedly high spatial frequency (λ/8) is found in the the atomic distribution. This is attributed to avoided crossings arising from Raman coherences induced between magnetic sublevels. These results show that level crossings and nonadiabatic transitions can play an important role in the manipulation of atomic trajectories by nearresonant light fields.
Citation: Physical Review Letters
Volume: 76
Issue: 25
Pages: pp. 4689 - 4692
Research Areas: Nanofabrication, Nanomanufacturing, and Nanoprocessing
PDF version: PDF Document Click here to retrieve PDF version of paper (83KB)