SAMOP 2023 – scientific programme
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A: Fachverband Atomphysik
A 20: Poster II
A 20.23: Poster
Wednesday, March 8, 2023, 16:30–19:00, Empore Lichthof
A Coincidence Electron Velocity-Map-Imaging and Ion Microscopy Unit for Ultracold Atoms — •Jette Heyer1,2, Julian Fiedler1,2, Mario Großmann1,2, Amir Khan2, Linn Hamester2, Klaus Sengstock1,2, Markus Drescher1,2, Juliette Simonet1,2, and Philipp Wessels-Staarmann1,2 — 1The Hamburg Centre for Ultrafast Imaging, Luruper Chaussee 149, 22761 Hamburg, Germany — 2Center for Optical Quantum Technologies, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
By combining an ultracold quantum gas of 87Rb with local strong-field ionization in femtosecond laser pulses, we investigate many-body systems with long-range interaction and atom-ion hybrid systems.
A novel coincidence unit consisting of an ion microscope and a velocity-map-imaging (VMI) spectrometer is developed to detect the ionization products, allowing simultaneous resolution of the spatial distribution of the ions and the momentum of the photoelectrons.
Simulations for the ion microscope suggest a resolution in the 100 nm range, surpassing the optical resolution limit of quantum gas microscopes.
The VMI spectrometer is designed to detect electrons with a kinetic energy of 0.05 meV − 3.2 eV, with a simulated resolution of Δ E/E ≤ 10 % with angular resolution.
Additionally, a pulsed extraction of the ions and electrons allows a coincidence detection for investigating correlations as well as the dynamics of the many-body system.