The fine structure constant alpha: Laser spectroscopy of helium and electromagnetically induced transparency

Year: 1997

Authors: Inguscio M., Giusfredi G., Pavone F.S., Prevedelli M.

Autors Affiliation: European Laboratory for Non-Linear Spectroscopy (LENS)
Istituto Nazionale di Ottica (INO)
Department of Physics, University of Firenze
INFN, Sezione di Firenze

Abstract: Spectroscopy of helium is discussed in the context of methods to determine the fine structure constant a. Resonances corresponding to the fine structure separation are observed in the coherent excitation of a He-4 metastable beam by two laser fields. A quantitative analysis of the Lineshapes is performed for the three level model (

Journal/Review: PHYSICA SCRIPTA

Volume: T70      Pages from: 42  to: 47

KeyWords: fine structure; helium; spectroscopy; transparency;
DOI: 10.1088/0031-8949/1997/T70/006

Citations: 1
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