A Numerical Study of Pulse-Shape Control of Non-Adiabatic Electron Excitation in the Strong-Field Regime

ORAL

Abstract

The electron optical response of several molecular monocations to short strong-field laser pulses was studied using time-dependent Hartree-Fock theory. In addition to the carrier frequency and maximum amplitude (up to 3.75 x 10$^{13}$ W/cm$^{2})$, the short pulses were characterized by pulse shape parameters: the amplitude profile (trapezoidal and gaussian) and the carrier phase shift. The electron response was traced by the evolution of the excited states occupation numbers and by the instantaneous dipole moment of the molecule. In the molecular monocations studied, butadiene, naphthalene, and anthracene, we observed significant modifications in the dipole moment response and in the corresponding excited state spectra, controlled by intensity, frequency, phase, and shape of the laser pulse.

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Authors

  • Stanley Smith

    (1) Department of Chemistry, (2) Department of Physics, and (3) Center for Advanced Photonics Research, Temple University, Philadelphia, PA 19122 USA, Temple Uinversity Chemistry Department

  • Xiaosong Li

    University of Washington Chemistry Department

  • Alexei Markevitch

    Temple University Chemistry Department

  • Dmitri Romanov

    Temple University Physics Department

  • H. Bernhard Schlegel

    Wayne State University Chemistry Department

  • Robert Levis

    (1) Department of Physics, (2) Department of Chemistry, and (3) Center for Advanced Photonics Research, Temple University, Philadelphia PA, Temple University Chemistry Department