Hannover 2020 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 62: Control (joint session MO/Q)

Q 62.8: Vortrag

Freitag, 13. März 2020, 15:45–16:00, f102

Laser induced electron diffraction in the molecular frame — •Joss Wiese^{1, 2}, Jolijn Onvlee^{1, 3}, Andrea Trabattoni^{1, 3}, Evangelos Karamatskos^{1, 4}, Sebastian Trippel^{1, 3}, and Jochen Küpper^{1, 2, 3, 4} — ¹Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron DESY, Hamburg — ²Department of Chemistry, Universität Hamburg — ³The Hamburg Center for Ultrafast Imaging, Universität Hamburg — ⁴Department of Physics, Universität Hamburg

Laser-induced electron diffraction (LIED) has the potential to provide time-dependent images of molecules at sub-femtosecond and few-picometer resolution and is therefore ideally suited to record quantum molecular movies. Here we present our work on LIED and strong field ionization off strongly aligned molecular samples. Our samples include simple linear molecules like OCS as well as prototypical biomolecules such as indole and its microsolvated clusters. Effects of the overall strong-field recollision dynamics on the orientation of the molecules will be presented and compared with time dependent density-functional theory (TDDFT) simulations as well as with novel highly efficient semiclassical simulations based on the adiabatic tunneling theory. Our findings have strong impact on the interpretation of self-diffraction experiments, where the photoelectron momentum distribution is used to retrieve molecular structures.