In order to understand how does the intense laser interact with matter we first of allstudy the ionization process. In this highly nonlinear region the conventional perturbationtheory will fail to predict the experimental results. Alternative theories have beenproposed in the past few decades. The fundamental difficulty in these new approachesis when laser field becomes so intense such that it is comparable to the Coulomb fieldat where the ground state electron mainly concentrate, we have to treat the laser fieldand the Coulomb field on an equal footing. The analytical solution that can describe thepropagation of electron in both the laser field and the Coulomb field has not been found;therefore, in these new theories the ionization process is either divided temporarily intolaser period and Coulomb period or spatially into laser field domain and Coulomb fielddomain. The propagation of electron in the full Hamiltonian is avoided.
【 预 览 】
附件列表
Files
Size
Format
View
Intense laser field ionization of atom and molecular ion
PDF
download
878987797
028-85220240
