Multiphoton Rabi oscillations of correlated electrons in strong-field nonsequential double ionization

With quantum calculations, we have investigated the multiphoton nonsequential double ionization of helium atoms in intense laser fields at ultraviolet wavelengths. Very surprisingly, we found a so-far unobserved double-circle structure in the correlated electron momentum spectra. The double-circle s...

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Bibliographic Details
Published inNew journal of physics Vol. 14; no. 1; pp. 013001 - 13009
Main Authors Liao, Qing, Zhou, Yueming, Huang, Cheng, Lu, Peixiang
Format Journal Article
LanguageEnglish
Published IOP Publishing 05.01.2012
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Summary:With quantum calculations, we have investigated the multiphoton nonsequential double ionization of helium atoms in intense laser fields at ultraviolet wavelengths. Very surprisingly, we found a so-far unobserved double-circle structure in the correlated electron momentum spectra. The double-circle structure essentially reveals multiphoton Rabi oscillations of two electrons, which are strongly supported by the oscillating population of a certain doubly excited state and by the oscillating double ionization signals. This two-electron multiphoton Rabi effect provides a profound understanding of electronic correlations and complicated multiphoton phenomena and is expected to be a new tool for broad applications, such as quantum coherent control.
ISSN:1367-2630
1367-2630
DOI:10.1088/1367-2630/14/1/013001