Issue 42, 2009
From the journal:

Physical Chemistry Chemical Physics

Laser-induced 3D alignment and orientation of quantum state-selected molecules

Iftach Nevo,a   Lotte Holmegaard,a   Jens H. Nielsen,b   Jonas L. Hansen,c   Henrik Stapelfeldt,*ac   Frank Filsinger,d   Gerard Meijerd  and  Jochen Küpper*d  

* Corresponding authors

a Department of Chemistry, University of Aarhus, DK-8000 Aarhus C, Denmark
E-mail: henriks@chem.au.dk

b Department of Physics and Astronomy, University of Aarhus, DK-8000 Aarhus C, Denmark

c Interdisciplinary Nanoscience Center (iNANO), University of Aarhus, DK-8000 Aarhus C, Denmark

d Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
E-mail: jochen@fhi-berlin.mpg.de

Abstract

A strong inhomogeneous static electric field is used to spatially disperse a rotationally cold supersonic beam of 2,6-difluoroiodobenzene molecules according to their rotational quantum state. The molecules in the lowest-lying rotational states are selected and used as targets for 3-dimensional alignment and orientation. The alignment is induced in the adiabatic regime with an elliptically polarized, intense laser pulse and the orientation is induced by the combined action of the laser pulse and a weak static electric field. We show that the degree of 3-dimensional alignment and orientation is strongly enhanced when rotational state-selected molecules, rather than molecules in the original molecular beam, are used as targets.

Graphical abstract: Laser-induced 3D alignment and orientation of quantum state-selected molecules

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Article information

DOI
https://doi.org/10.1039/B910423B
Article type
Paper
Submitted
27 May 2009
Accepted
30 Jul 2009
First published
25 Aug 2009

Phys. Chem. Chem. Phys., 2009,11, 9912-9918

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Laser-induced 3D alignment and orientation of quantum state-selected molecules

I. Nevo, L. Holmegaard, J. H. Nielsen, J. L. Hansen, H. Stapelfeldt, F. Filsinger, G. Meijer and J. Küpper, Phys. Chem. Chem. Phys., 2009, 11, 9912 DOI: 10.1039/B910423B

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