Research Papers in Physics and Astronomy

 

Date of this Version

5-25-2012

Citation

PHYSICAL REVIEW LETTERS 108, 213002 (May 25, 2012); DOI: 10.1103/PhysRevLett.108.213002

Comments

Copyright 2012 American Physical Society. Used by permission.

Abstract

An analytic description for the yield, P(p), of high-energy electrons ionized from an atom by a short (few-cycle) laser pulse is obtained quantum mechanically. Factorization of P(p) in terms of an electron wave packet and the cross section for elastic electron scattering (EES) is shown to occur only for an ultrashort pulse, while in general P(p) involves interference of EES amplitudes with laser-field-dependent momenta. The analytic predictions agree well with accurate numerical results.

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