Photoionization in the presence of circularly polarized fundamental and odd-order harmonic fields

I. A. Ivanov, Chang Hee Nam, Kyung Taec Kim

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    7 Citations (Scopus)

    Abstract

    We present a study of the photoelectron spectra for the ionization process driven by counterrotating and corotating circularly polarized fundamental and odd-order harmonic fields. The main features of the spectra, such as symmetric lobed structures, are understood using simple arguments based on the strong field approximation (SFA) picture of ionization. A deviation from this picture is, most notably, the presence of the low-energy structures (LES) in the spectra. We show that the Rydberg states populated as a result of the combined absorption of the photons from the fundamental and harmonic fields are responsible for the origin of LES.

    Original languageEnglish
    Article number053401
    JournalPhysical Review A
    Volume95
    Issue number5
    DOIs
    Publication statusPublished - 3 May 2017

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