Abstract
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 language | English (US) |
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Pages (from-to) | 484-489 |
Number of pages | 6 |
Journal | Laser Physics |
Volume | 13 |
Issue number | 4 |
State | Published - Apr 1 2003 |
Externally published | Yes |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Instrumentation
- Condensed Matter Physics
- Industrial and Manufacturing Engineering