title: Adiabatic Mixed-Field Orientation of Ground-State-Selected Carbonyl Sulfide Molecules.
abstract: A strong adiabatic mixed-field orientation (Nup/Ntot=0.882) of carbonyl sulfide (OCS) molecules in their absolute ground state is experimentally demonstrated. OCS is oriented in a combination of nonresonant laser and static electric fields inside a two-plate velocity map imaging spectrometer. The transition from nonadiabatic to adiabatic orientation for the rotational ground state is studied by varying the applied laser intensity and static electric field. Above static electric field strengths of 10 kV cm-1and laser intensities of 1011W cm-2the observed degree of orientation reaches a plateau. These results are in good agreement with computational solutions of the time-dependent Schrödinger equation.
authors.affiliation: Center for Free-Electron Laser Science (CFEL), Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607, Hamburg, Germany.|The Hamburg Center for Ultrafast Imaging, University of Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany.
authors.forename: Jens S
authors.initials: JS
authors.lastname: Kienitz
authors.affiliation: Center for Free-Electron Laser Science (CFEL), Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607, Hamburg, Germany.|The Hamburg Center for Ultrafast Imaging, University of Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany.
authors.forename: Sebastian
authors.initials: S
authors.lastname: Trippel
authors.affiliation: Center for Free-Electron Laser Science (CFEL), Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607, Hamburg, Germany.
authors.forename: Terry
authors.initials: T
authors.lastname: Mullins
authors.affiliation: Center for Free-Electron Laser Science (CFEL), Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607, Hamburg, Germany.
authors.forename: Karol
authors.initials: K
authors.lastname: Długołęcki
authors.affiliation: Instituto Carlos I de Física Teórica y Computacional and Departamento de Física Atómica, Molecular y Nuclear, Universidad de Granada, 18071, Granada, Spain.
authors.forename: Rosario
authors.identifier: http://orcid.org/0000-0002-8871-116X
authors.initials: R
authors.lastname: González-Férez
authors.affiliation: Center for Free-Electron Laser Science (CFEL), Deutsches Elektronen-Synchrotron 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.forename: Jochen
authors.identifier: http://orcid.org/0000-0003-4395-9345
authors.initials: J
authors.lastname: Küpper
keywords: adiabatic dynamics; laser chemistry; laser spectroscopy; mixed-field orientation; velocity map imaging