27 citations · 49 across the 9 of their papers we have counts for
9 papers
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…
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…
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…
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…
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…
Coherent Acoustic Phonons in Plasmonic Nanoparticles: Elastic Properties and Dissipation at Low Temperatures
Hilario D. Boggiano, Thomas Possmayer, Luis Morguet +7
We studied the frequency and quality factor of mechanical plasmonic nanoresonators as a function of temperature, ranging from ambient to 4 K. Our investigation focused on individua…
Si Metasurface Supporting Multiple Quasi-BICs for Degenerate Four-Wave Mixing
Gianni Q. Moretti, Thomas Weber, Thomas Possmayer +6
Dielectric metasurfaces supporting quasi-bound states in the continuum (qBICs) enable high field enhancement with narrow-linewidth resonances in the visible and near-infrared range…
Emergent resonances in a thin film tailored by optically-induced small permittivity asymmetries
Rodrigo Berté, Thomas Possmayer, Andreas Tittl +2
Resonances are usually associated with finite systems - the vibrations of clamped strings in a guitar or the optical modes in a cavity defined by mirrors. In optics, resonances may…