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APS » Journals » Phys. Rev. A » Volume 49 » Issue 2
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Phys. Rev. A 49, R649–R652 (1994)

Verification of the ponderomotive approximation for the ac Stark shift in Xe Rydberg levels

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T. R. O’Brian, J.-B. Kim, G. Lan, T. J. McIlrath, and T. B. Lucatorto
Electron and Optical Physics Division, National Institute of Standards Technology, Gaithersburg, Maryland 20899
Atomic Spectroscopy Department, Korea Atomic Energy Research Institute, Taejon, Korea

Received 17 March 1993; published in the issue dated February 1994

We report direct measurements of the ac Stark shifts of Xe Rydberg levels in high-intensity laser fields (up to 6 GW/cm2), demonstrating the expected near-ponderomotive behavior. These measurements provide extensive unambiguous evidence for the validity of perturbative calculations of the nonresonant ac Stark shift at these intensities.

© 1994 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.49.R649
DOI:
10.1103/PhysRevA.49.R649
PACS:
32.80.Fb, 32.80.Rm
 
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