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physics.optics2025
Attosecond high-harmonic interferometry probes orbital- and band-dependent dipole phase in magnesium oxide
Nataliia Kuzkova, Pieter J. van Essen, Brian de Keijzer +3
Control over the spatial coherence, wavefront, and focusability of emitted light relies on understanding the intrinsic phase of the emission process, and vice versa, measuring phas…
physics.optics2025
Extreme Ultraviolet High-Harmonic Interferometry of Excitation-Induced Bandgap Dynamics in Solids
Lisa-Marie Koll, Simon Vendelbo Bylling Jensen, Pieter J. van Essen +9
Interferometry is a fundamental technique in physics, enabling precise measurements through the interference of waves. High-harmonic generation (HHG) in solids has emerged as a pow…
physics.optics2024
Spatial polarization gating of high-harmonic generation in solids
Pieter J. van Essen, Brian de Keijzer, Tanya van Horen +4
High-harmonic generation from solids can be utilized as probe of ultrafast dynamics, but thus far only over extended sample areas, since its spatial resolution is diffraction-limit…