Hannover 2016 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 21: Interaction with strong or short laser pulses

A 21.14: Poster

Dienstag, 1. März 2016, 16:30–19:00, Empore Lichthof

OPCPA meets Reaction Microscope — •Claus Peter Schulz, Federico Furch, Felix Schell, Achut Giree, Sascha Birkner, Jochen Mikosch, and Marc Vrakking — Max Born Institute, Berlin, Germany

Spectroscopy derived from intense laser fields and with energetic XUV photons from High Harmonic Generation promises to bring unprecedented temporal and spatial resolution to studies of molecular dynamics. In particular for polyatomic molecules a complete detection scheme of the full manifold of 3D momentum vectors of all outgoing charged particles is invaluable for the interpretation of results. So-called reaction microscopes, which have already been developed more than a decade ago, enable this type of complete experiments by detecting the energy and angular distribution of photo electrons and ions in coincidence. Coincidence experiments benefit highly from increased repetition rates to boost the signal rates. Recently, we have set-up a laboratory where we combine a 400 kHz repetition rate laser system based on Optical Parametric Chirped-pulse Amplification (OPCPA) providing pulses with sub-7 fs duration and energies up to 10 µJ with a reaction microscope. First results on atoms and small hydrocarbon chains will be presented as well as our plans for XUV-IR spectroscopy.