Hannover 2016 – wissenschaftliches Programm

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MO: Fachverband Molekülphysik

MO 1: Quantum Control and Femtosecond Spectroscopy 1

MO 1.8: Vortrag

Montag, 29. Februar 2016, 12:45–13:00, f102

Wavelength dependence of Photoelectron Circular Dichroism in Femtosecond Multiphoton Ionization — •Alexander Kastner, Stefanie Züllighoven, Tom Ring, Cristian Sarpe, Christian Lux, Arne Senfleben, and Thomas Baumert — Universität Kassel, Institut für Physik und CINSaT, D-34132 Kassel, Germany

The asymmetry of photoelectron angular distributions (PADs) from randomly oriented enantiomers of chiral molecules in the ionization with circularly polarized light arises in forward/backward direction with respect to the light propagation. This effect was termed Photoelectron Circular Dichroism (PECD) and so far investigated using synchrotron radiation [1]. We observed highly structured asymmetries in the range of ± 10% on bicyclic Ketones [2, 3]. Due to the multi photon ionization (MPI), high order Legendre polynomials appear in the measured PADs. In the case of Resonance Enhanced MPI (REMPI) using femtosecond laser pulses, the observed Legendre polynomial distribution is determined through the intermediate resonance and can be influenced by the laser wavelength. In this contribution we show our recent findings on wavelength dependence of the PECD effect of bicyclic Ketones.
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C. Lux et al., Chem. Phys. Chem, DOI: 10.1002/cphc.200 (2015)