Enhancement of strong-field two-electron ionization via doubly excited states

M. Sukharev, E. Charron, A. Suzor-Weiner

Research output: Contribution to journalArticlepeer-review


We have performed nonperturbative time-dependent calculations of single and double ionization of atomic calcium by short and intense laser pulses using a two-active electron model (TAE). It is shown that the significant enhancement of the Ca2+ yield observed in a recent experiment [1] using feedback control techniques originates from the time asymmetry of the pulse shape. The initial part of the pulse prepares a coherent superposition of doubly excited states which is transferred into the double electron continuum at later times. An asymmetric shape, with a slowly decreasing tail, therefore favors the production of Ca2+.

Original languageEnglish (US)
Pages (from-to)484-489
Number of pages6
JournalLaser Physics
Issue number4
StatePublished - Apr 1 2003
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Instrumentation
  • Condensed Matter Physics
  • Industrial and Manufacturing Engineering


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