Hamburg 2009 – scientific programme

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A: Fachverband Atomphysik

A 34: Poster II

A 34.37: Poster

Thursday, March 5, 2009, 16:30–19:00, VMP 9 Poster

Tomographic analysis of photoelectron wave packets from strong-field excitation of potassium atoms with fs laser pulses — •Marc Krug, Matthias Wollenhaupt, Jens Köhler, Tim Bayer, and Thomas Baumert — Universität Kassel, Institut für Physik und Center for Interdisciplinary Nanostructure Science and Technology (CINSaT) , Heinrich-Plett-Str. 40, D-34132 Kassel, Germany

We present an approach to employ a photoelectron imaging spectrometer for tomography of 3-dimensional electron wave packets resulting from excitation and ionization of potassium atoms with fs laser pulses. Ionization proceeds via a (1+2) Resonance Enhanced Multi-Photon Ionization process mainly leading to free electron wave packets with f–symmetry. Analysis of the 3-dimensional wave packets is performed by rotating the fs laser pulse about the propagation axis and measuring Photoelectron Angular Distributions (PADs) in a tomography-type procedure. Related to the latter, we present a method to deconvolute the information stored in the measured 2-dimensional projections in order to get the density of the 3-dimensional electron wave packet.