Frequency-dependent polarizabilities of alkali-metal atoms from ultraviolet through infrared spectral regions

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M. S. Safronova and Bindiya Arora
Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA

Charles W. Clark
Physics Laboratory, National Institute of Standards and Technology, Technology Administration, U.S. Department of Commerce, Gaithersburg, Maryland 20899-8410, USA

Received 13 August 2005; published 9 February 2006

Wepresent results of first-principles calculations of the frequency-dependent polarizabilities ofall alkali-metal atoms for light in the wavelength range 300–1600nm, with particular attention to wavelengths of common infrared lasers.We parametrize our results so that they can be extendedaccurately to arbitrary wavelengths above 800 nm. This work ismotivated by recent experiments involving simultaneous optical trapping of twodifferent alkali-metal species. Our data can be used to predictthe oscillation frequencies of optically trapped atoms, and particularly theratios of frequencies of different species held in the sametrap. We identify wavelengths at which two different alkali-metal atomshave the same oscillation frequency.

URL:	http://link.aps.org/doi/10.1103/PhysRevA.73.022505
DOI:	10.1103/PhysRevA.73.022505
PACS:	32.10.Dk; 31.15.Md; 32.70.Jz; 32.80.Rm 32.10.Dk Atomic electric and magnetic moments, polarizability 31.15.Md Perturbation theory (atoms and molecules) 32.70.Jz Atomic line shapes, widths, and shifts 32.80.Rm Multiphoton ionization and excitation to highly excited states in atoms e.g., Rydberg states YEAR: 2006
KEYWORDS:	alkali metals, polarisability, ultraviolet spectra, infrared spectra, ab initio calculations, radiation pressure

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