3 papers
physics.optics2026
Controlling the Coupling Strengths in Nanophotonic Networks using Modified Yagi-Uda Nanoplasmonic Antennas
Vidar Flodgren, Anders Mikkelsen
On-chip communication in optical neural networks is commonly done via waveguides which results in large system footprints. A compact alternative is to broadcast light signals betwe…
cond-mat.mes-hall2024
Sub-100-fs formation of dark excitons in monolayer WS2
Pavel V. Kolesnichenko, Lukas Wittenbecher, Qianhui Zhang +5
Two-dimensional semiconducting transition metal dichalcogenides (TMDs) are promising for optoelectronic applications due to their strongly bound excitons. While bright excitons hav…
physics.optics2023
Time-resolved photoemission electron microscopy on a ZnO surface using an extreme ultraviolet attosecond pulse pair
Jan Vogelsang, Lukas Wittenbecher, Sara Mikaelsson +6
Electrons photoemitted by extreme ultraviolet attosecond pulses derive spatially from the first few atomic surface layers and energetically from the valence band and highest atomic…