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International Laser Science Conference

Theory of atomic motion in laser light

Claude N. Cohen-Tannoudji

Published Jan 1, 1986• 3 citations
Publisher

Abstract

Simple physical pictures using the dressed atom approach are introduced for understanding atomic motion in laser beams.1 New cooling schemes are suggested.
DOI
10.1364/ils.1986.wf1

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Physical Review A•Sep 1, 1994•6 citations
Atoms in weak broadband quasi-resonant fields - light shifts atoms in linear superpositions of Zeeman sublevels-Zeeman coherences atoms in strong radiofrequency fields - the dressed-atom approach in the RF domain atoms in intense resonant laser beams - the dressed-atom approach in the optical domain the radiative cascade of the dressed atom - photon correlations and quantum jumps atoms in high-frequency fields or in the vacuum field - simple physical pictures for radiative corrections atomic motion in laser light - laser cooling and trapping.
Atoms in weak broadband quasi-resonant fields - light shifts atoms in linear superpositions of Zeeman sublevels-Zeeman coherences atoms in strong radiofrequency fields - the dressed-atom approach in the RF domain atoms in intense resonant laser beams - the dressed-atom approach in the optical domain the radiative cascade of the dressed atom - photon correlations and quantum jumps atoms in high-frequency fields or in the vacuum field - simple physical pictures for radiative corrections atomic motion in laser light - laser cooling and trapping.
The simulated magneto-optical force, which in the presence of a longitudinal static magnetic field is exerted on atoms resonant with the high-intensity light field of two counterpropagating, linearly polarized laser beams with an angle of \ensuremath{\sim}45\ifmmode^\circ\else\textdegree\fi{} between their directions of polarization, is described in the dressed-atom picture. This allows an easy calculation of the force on atoms at rest, illustratively explains its nonzero wavelength average, and provides an intuitive understanding of its dependence on the atomic velocity. For a simple atomic model transition (J=0\ensuremath{\leftrightarrows}J'=1) the velocity-dependent force is calculated by considering the motion along the dressed states and using the Landau-Zener model for the nonadiabatic transitions at the avoided level crossings. It is shown that for a certain relation between Larmor and optical Rabi frequency a perfectly diabatic motion takes place, leading to a disappearance of the velocity-tuned (doppleron) resonance structure.