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Phys Rev Lett. 2010 Apr 02;104(13):133001. doi: 10.1103/PhysRevLett.104.133001. Epub 2010 Mar 29.

Coherent control of angular momentum transfer in resonant two-photon light-matter interaction.

Physical review letters

D A Malik, A V Kimel, A Kirilyuk, Th Rasing, W J van der Zande

Affiliations

  1. Radboud University Nijmegen, Institute for Molecules and Materials, P.O. Box 9010, NL-6500 GL Nijmegen, The Netherlands.

PMID: 20481880 DOI: 10.1103/PhysRevLett.104.133001

Abstract

We show experimentally and theoretically that a polarization-shaped femtosecond laser pulse with a zero net angular momentum creates a net angular momentum in atomic rubidium during resonant two-photon excitation. The necessary conditions for the creation of a nonzero angular momentum as well as the excitation efficiencies are analyzed in the framework of second-order time-dependent perturbation theory.

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