title: Making the best of mixed-field orientation of polar molecules: a recipe for achieving adiabatic dynamics in an electrostatic field combined with laser pulses.
abstract: We have experimentally and theoretically investigated the mixed-field orientation of rotational-state-selected OCS molecules and achieved strong degrees of alignment and orientation. The applied moderately intense nanosecond laser pulses are long enough to adiabatically align molecules. However, in combination with a weak dc electric field, the same laser pulses result in nonadiabatic dynamics of the mixed-field orientation. These observations are fully explained by calculations employing both adiabatic and nonadiabatic (time-dependent) models.
authors.affiliation: Department of Physics and Astronomy, Aarhus University, 8000 Aarhus C, Denmark.
authors.forename: Jens H
authors.initials: JH
authors.lastname: Nielsen
authors.forename: Henrik
authors.initials: H
authors.lastname: Stapelfeldt
authors.forename: Jochen
authors.initials: J
authors.lastname: Küpper
authors.forename: Bretislav
authors.initials: B
authors.lastname: Friedrich
authors.forename: Juan J
authors.initials: JJ
authors.lastname: Omiste
authors.forename: Rosario
authors.initials: R
authors.lastname: González-Férez