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Thesis

External Coupling and Modifications to an Ultra-Fast Laser Pulse Setup to Allow Higher Infrared Peak Intensities

MPS-Authors
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Röhrich,  Lukas
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

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BA_RoehrichLukas_30042021.pdf
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Citation

Röhrich, L. (2021). External Coupling and Modifications to an Ultra-Fast Laser Pulse Setup to Allow Higher Infrared Peak Intensities. Bachelor Thesis, Ruprecht-Karls-Universität, Heidelberg.


Cite as: https://hdl.handle.net/21.11116/0000-0009-419F-B
Abstract
In this thesis, a modification of an experimental setup, able to analyse atom dynamics during interaction with a high intensity field, and the first steps towards implementation are
presented. The idea of the experiment is to utilize high intensity infrared (IR)
radiation to perturb the atom's potential, while exciting or ionizing them with
extreme ultra violet photons. The planned modifications are: 1) an external coupling
of one part of the IR pulse into the existing experiment, which consists of a
time delay stage and an off-axis parabolic Mirror and 2) using a high intensity IR
Titanium Sapphire laser pulse centered about 800 nm, which will replace optical
parametric amplified pulses centered around 1 to 2 μm. This leads to a more
intense IR with a possible peak intensity in the regime of 1017 Wcm-2. These technical modifications allow for a stronger perturbation of the benchmark atom
Helium, for the purpose of investigating correlated two electron wavepackets in
double ionization or excitation processes.