6 papers
Topological Control of Polaritonic Flatbands in Anisotropic van der Waals Metasurfaces
Connor Heimig, Thomas Weber, Cristina Cruciano +9
Anisotropic van der Waals (vdW) materials exhibit direction-dependent optical and electronic properties, making them valuable for tailoring directional light-matter interactions. R…
Absolute Primary Nanothermometry Using Individual Stark Sublevels of Rare-Earth-doped Crystals
Allison R. Pessoa, Thomas Possmayer, Jefferson A. O. Galindo +4
We present two independent optical methods for absolute primary thermometry using rare-earth-doped nanoparticles. Both approaches rely exclusively on the internal energy levels and…
Boltzmann Thermometry at Cryogenic Temperatures Exploiting Stark Sublevels in Er/Yb-Codoped Yttrium Oxide Nanoparticles
Thomas Possmayer, Allison R. Pessoa, Jefferson A. O. Galindo +4
The development of reliable luminescent nanothermometers for cryogenic applications is essential for advancing quantum technologies, superconducting systems, and other fields that…
Chiral Nonlinear Polaritonics with van der Waals Metasurfaces
Connor Heimig, Alexander A. Antonov, Dmytro Gryb +10
In the strong-coupling regime, the interaction between light and matter reaches a hybridization state where the photonic and material components are inseparably linked. Using tailo…
Ultrafast all-optical switching in nonlinear 3R-MoS van der Waals metasurfaces
Levin Seidt, Thomas Weber, Albert A. Seredin +7
Second-order nonlinear optical processes are fundamental to photonics, spectroscopy, and information technologies, with material platforms playing a pivotal role in advancing these…
Temporally symmetry-broken metasurfaces for ultrafast resonance creation and annihilation
Andreas Aigner, Thomas Possmayer, Thomas Weber +3
Active metasurfaces, compact platforms for nanoscale light manipulation, are transforming technologies like holography, quantum cryptography, and optical computing. Despite their v…