title: Two-state wave packet for strong field-free molecular orientation.
abstract: We demonstrate strong laser-field-free orientation of absolute-ground-state carbonyl sulfide molecules. The molecules are oriented by the combination of a 485-ps-long nonresonant laser pulse and a weak static electric field. The edges of the laser pulse create a coherent superposition of two rotational states resulting in revivals of strong transient molecular orientation after the laser pulse. The experimentally attained degree of orientation ⟨cosθ⟩≈0.6 corresponds to the theoretical maximum for mixing of the two states. Switching off the dc field would provide the same orientation completely field free.
authors: Center for Free-Electron Laser Science, DESY, Notkestrasse 85, 22607 Hamburg, Germany.
authors: Sebastian
authors: S
authors: Trippel
authors: Center for Free-Electron Laser Science, DESY, Notkestrasse 85, 22607 Hamburg, Germany.
authors: Terry
authors: T
authors: Mullins
authors: Center for Free-Electron Laser Science, DESY, Notkestrasse 85, 22607 Hamburg, Germany.
authors: Nele L M
authors: NL
authors: Müller
authors: Center for Free-Electron Laser Science, DESY, Notkestrasse 85, 22607 Hamburg, Germany.|The Hamburg Center for Ultrafast Imaging, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany.
authors: Jens S
authors: JS
authors: Kienitz
authors: The Hamburg Center for Ultrafast Imaging, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany.|Instituto Carlos I de Física Teórica y Computacional and Departamento de Física Atómica, Molecular y Nuclear, Universidad de Granada, 18071 Granada, Spain.
authors: Rosario
authors: R
authors: González-Férez
authors: Center for Free-Electron Laser Science, DESY, Notkestrasse 85, 22607 Hamburg, Germany.|The Hamburg Center for Ultrafast Imaging, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany.|Department of Physics, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany.
authors: Jochen
authors: J
authors: Küpper