A5102987514- Semiconductor materials and interfaces
- Surface and Thin Film Phenomena
- Astronomical Observations and Instrumentation
- Photocathodes and Microchannel Plates
- Cerebrovascular and genetic disorders
- 2D Materials and Applications
- Cell Adhesion Molecules Research
- Ga2O3 and related materials
- Neurological Disorders and Treatments
- Radiation Detection and Scintillator Technologies
- Topological Materials and Phenomena
- Platelet Disorders and Treatments
- Electron and X-Ray Spectroscopy Techniques
- Blood groups and transfusion
- Orbital Angular Momentum in Optics
- Advanced Semiconductor Detectors and Materials
- Advanced Electron Microscopy Techniques and Applications
- Semiconductor materials and devices
- Adaptive optics and wavefront sensing
- Solid-state spectroscopy and crystallography
- Hedgehog Signaling Pathway Studies
Leiden University
2012-2025
Czech Academy of Sciences, Institute of Physics
2025
Cancer Center Amsterdam
2022
Amsterdam University Medical Centers
2022
Alkali antimonides are well established as high efficiency, low intrinsic emittance photocathodes for accelerators and photon detectors. However, conventionally grown alkali antimonide films polycrystalline with surface disorder roughness that can limit achievable beam brightness. Ordering the crystalline structure of has potential to deliver higher brightness electron beams by reducing enabling engineering material properties at level atomic layers. In this report, we demonstrate growth...
The development of high-brightness electron sources is critical to state-of-the-art accelerator applications like X-ray free laser (XFEL) and ultra-fast microscopy. Cesium telluride chosen as the source material for multiple cutting-edge XFEL facilities worldwide. This manuscript presents first demonstration growth highly crystalized epitaxial cesium thin films on 4H-SiC graphene/4H-SiC substrates with ultrasmooth film surfaces. ordering was characterized by in situ reflection high energy...
Ultra-flat, ultra-thin alkali antimonide photocathodes with high crystallinity can exhibit quantum efficiency and low mean transverse energy of outgoing electrons, which are essential requirements for a variety applications photocathode materials. Here, we investigate the growth Cs3Sb on graphene-coated 4H–SiC (Gr/4H–SiC), 3C–SiC, Si3N4 substrates. Sb is deposited using pulsed laser deposition, while Cs thermally simultaneously. We demonstrate, employing x-ray analysis measurements, that...
We present a design to generate structurally propagation invariant light beams carrying non-integer orbital angular momentum (OAM) using Hermite-Laguerre-Gaussian (HLG) modes. Different from previous techniques, the symmetry axes of our are fixed when varying OAM; this simplifies calibration technique for beam positional measurement quadrant detector. have also demonstrated analytically and experimentally that both OAM value HLG mode orientation play an important role in detector response....
Alkali antimonides are well established as high efficiency, low intrinsic emittance photocathodes for accelerators and photon detectors. However, conventionally grown alkali antimonide films polycrystalline with surface disorder roughness that can limit achievable beam brightness. Ordering the crystalline structure of has potential to deliver higher brightness electron beams by reducing enabling engineering material properties at level atomic layers. In this report, we demonstrate growth...