title: Control of electron excitation and localization in the dissociation of H2(+) and its isotopes using two sequential ultrashort laser pulses.
abstract: We study the control of dissociation of the hydrogen molecular ion and its isotopes exposed to two ultrashort laser pulses by solving the time-dependent Schrödinger equation. While the first ultraviolet pulse is used to excite the electron wave packet on the dissociative 2psigma{u} state, a second time-delayed near-infrared pulse steers the electron between the nuclei. Our results show that by adjusting the time delay between the pulses and the carrier-envelope phase of the near-infrared pulse, a high degree of control over the electron localization on one of the dissociating nuclei can be achieved (in about 85% of all fragmentation events). The results demonstrate that current (sub-)femtosecond technology can provide a control over both electron excitation and localization in the fragmentation of molecules.
authors.affiliation: Max-Planck-Institut für Physik Komplexer Systeme, Nöthnitzer Str 38, D-01187, Dresden, Germany.
authors.forename: Feng
authors.initials: F
authors.lastname: He
authors.forename: Camilo
authors.initials: C
authors.lastname: Ruiz
authors.forename: Andreas
authors.initials: A
authors.lastname: Becker
mesh_terms: D004583:Electrons; D006859:Hydrogen; D007554:Isotopes; D007834:Lasers; D008027:Light; D056004:Molecular Dynamics Simulation; D011674:Pulse
chemical_list: D007554:Isotopes; D006859:Hydrogen