Jump to main content
Jump to site search

Issue 42, 2011
Previous Article Next Article

Theoretical description of adiabatic laser alignment and mixed-field orientation: the need for a non-adiabatic model

Author affiliations

Abstract

We present a theoretical study of recent laser-alignment and mixed-field-orientation experiments of asymmetric top molecules. In these experiments, pendular states were created using linearly polarized strong ac electric fields from pulsed lasers in combination with weak electrostatic fields. We compare the outcome of our calculations with experimental results obtained for the prototypical large molecule benzonitrile (C7H5N) [J. L. Hansen et al., Phys. Rev. A, 2011, 83, 023406.] and explore the directional properties of the molecular ensemble for several field configurations, i.e., for various field strengths and angles between ac and dc fields. For perpendicular fields one obtains pure alignment, which is well reproduced by the simulations. For tilted fields, we show that a fully adiabatic description of the process does not reproduce the experimentally observed orientation, and it is mandatory to use a diabatic model for population transfer between rotational states. We develop such a model and compare its outcome to the experimental data confirming the importance of non-adiabatic processes in the field-dressed molecular dynamics.

Graphical abstract: Theoretical description of adiabatic laser alignment and mixed-field orientation: the need for a non-adiabatic model

Back to tab navigation

Publication details

The article was received on 15 Apr 2011, accepted on 01 Jun 2011 and first published on 29 Jun 2011


Article type: Paper
DOI: 10.1039/C1CP21195A
Citation: Phys. Chem. Chem. Phys., 2011,13, 18815-18824
  •   Request permissions

    Theoretical description of adiabatic laser alignment and mixed-field orientation: the need for a non-adiabatic model

    J. J. Omiste, M. Gärttner, P. Schmelcher, R. González-Férez, L. Holmegaard, J. H. Nielsen, H. Stapelfeldt and J. Küpper, Phys. Chem. Chem. Phys., 2011, 13, 18815
    DOI: 10.1039/C1CP21195A

Search articles by author

Spotlight

Advertisements