4 papers
Multi-Mode Lens for Momentum Microscopy and XPEEM: Theory
Olena Tkach, Gerd Schoenhense
The strong electric field between the sample and the extractor is the core of cathode lenses and a pivotal determinant of high resolution. Nevertheless, fields in the range of 3-8…
Time- and Polarization-Resolved Extreme Ultraviolet Momentum Microscopy
Sotirios Fragkos, Quentin Courtade, Olena Tkach +7
We report the development of an instrument combining an ultrafast, high-repetition-rate, polarization-tunable monochromatic extreme ultraviolet (XUV, 21.6 eV) beamline and a next-g…
Floquet-Bloch Valleytronics
Sotirios Fragkos, Baptiste Fabre, Olena Tkach +6
Driving quantum materials out-of-equilibrium makes it possible to generate states of matter inaccessible through standard equilibrium tuning methods. Upon time-periodic coherent dr…
Cavity-Enhanced High-order Harmonic Generation for High-Performance Time-resolved Photoemission Experiments
Thomas K. Allison, Alice Kunin, Gerd Schönhense
Recent breakthroughs in high repetition-rate extreme ultraviolet (XUV) light sources and photoelectron analyzers have led to dramatic advances in the performance of time-resolved p…