Freiburg 2024 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 25: Poster IV
A 25.15: Poster
Mittwoch, 13. März 2024, 17:00–19:00, Tent A
A Coincidence Unit for Ultracold Quantum Gases combining Electron Velocity-Map-Imaging and Ion-Microscopy — •Lasse Paulsen1, Jette Heyer1,2, Julian Fiedler1,2, Mario Grossmann1,2, Klaus Sengstock1,2, Markus Drescher1,2, Juliette Simonet1,2, and Philipp Wessels-Staarmann1,2 — 1Center for Optical Quantum Technologies, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany — 2The Hamburg Centre for Ultrafast Imaging, Hamburg, Germany
By combining femtosecond laser pulses with ultracold quantum gases, new states of matter ranging from atom-ion hybrid sytems over dense Rydberg gases to ultracold microplasma can be created using local strong-field excitation and ionization.
In order to access the dynamics of these complex systems, a high spatial, spectral and angular resolution of the generated electrons and ions is necessary. Therefore, a coincidence unit consisting of a velocity-map-imaging spectrometer for electrons and an ion microscope will be implemented in the experimental setup. This allows mapping the electron momenta with a simulated energy resolution of Δ E/E ≤ 10% over a range of 0.05 meV - 3.2 eV and imaging of the ions with a spatial resolution of 100 nm. Furthermore, coincidence detection is enabled via pulsed extraction allowing to study the dynamics and correlations in many-body-systems with long-range interaction.