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Journal of Physics B Atomic and Molecular Physics

Effect of light polarization in multiphoton ionization

Serge Klarsfeld, A. Maquet

Published May 11, 1974• 9 citations
Publisher

Abstract

Multiphoton ionization rates for circular and linear polarization are calculated at threshold for various hydrogenic s states in the framework of ordinary perturbation theory. Circularly polarized light turns out to be more efficient in many cases.
DOI
10.1088/0022-3700/7/7/010

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The ratio ${\ensuremath{\mu}}_{N}$ of the cross section for circularly polarized light to that for linearly polarized is numerically investigated for NNN-photon ionization of atomic hydrogen. For N<4N<4N<4, it appears that the gain factor is greater than unity. For $N\ensuremath{\ge}4$, the ratio ${\ensuremath{\mu}}_{N}$ is generally smaller than unity and decreases when the multiphoton order NNN increases.