Classical simulation for one-dimensionalH2interacting with intense ultrashort laser pulses

Abstract

We have classically simulated the ionization and dissociation dynamics of a one-dimensional model of molecular hydrogen ${\mathrm{H}}_{2}$ under intense ultrashort laser pulses. The relative yields as well as the corresponding rates of the fragments have also been calculated numerically for different wavelength laser pulses ($\ensuremath{\lambda}=1064,$ 532, and 266 nm) that have the same intensity $(I=2.0\ifmmode\times\else\texttimes\fi{}{10}^{15}{\mathrm{W}/\mathrm{c}\mathrm{m}}^{2})$ and duration ${(T}_{d}=35\mathrm{fs}).$ We find that the intense ultrashort pulses with shorter wavelength favor the simultaneous ionization of two electrons in ${\mathrm{H}}_{2}.$