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Femtosecond laser pulse shaping for enhanced ionization | | A. Castro
; E. Rasanen
; A. Rubio
; E. K. U. Gross
; | | Date: |
10 Jun 2009 | | Abstract: | We demonstrate how the shape of femtosecond laser pulses can be tailored in
order to obtain maximal ionization of atoms or molecules. For that purpose, we
have overlayed a direct-optimization scheme on top of a fully unconstrained
computation of the three-dimensional time-dependent Schrodinger equation. The
procedure looks for pulses that maintain the same total length and integrated
intensity or fluence as a given pulse that serves as an initial guess. It
allows, however, for changes in frequencies -- within a certain, predefined
range -- and overall shape, leading to enhanced ionization. We illustrate the
scheme by calculating ionization yields for the H2+ molecule when irradiated
with short (~5 fs), high-intensity laser pulses. | | Source: | arXiv, 0906.1938 | | Services: | Forum | Review | PDF | Favorites | |
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