Resonant enhancement of generation of harmonics

I. A. Ivanov, A. S. Kheifets

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    23 Citations (Scopus)

    Abstract

    We develop a Floquet based formalism which describes a process of the generation harmonics of in an atom driven by a laser field. Using this formalism, we show that several harmonics are strongly enhanced in the spectrum when the laser frequency is such that a multiphoton resonance occurs between the initial state and a quasienergy state. We illustrate these findings by a numerical calculation of the harmonics generation in the potassium and rubidium atoms driven by a laser in the near-infrared energy range. The present formalism is also applicable when the initial state is a coherent superposition of several field-free atomic states.

    Original languageEnglish
    Article number053406
    JournalPhysical Review A - Atomic, Molecular, and Optical Physics
    Volume78
    Issue number5
    DOIs
    Publication statusPublished - 11 Nov 2008

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