Webb17 mars 2024 · Single layer metasurfaces, through varying the geometrical parameters, have demonstrated to produce optical polarization conversion in the THz spectrum. However, in each of these demonstrations, the results for modification of the cross polarization conversion were narrowband and relied on a static geometry to produce the … Webb17 maj 2024 · Terahertz (THz) radiation has many potential applications. However, comparing with the rapid development of THz sources and detectors, functional devices for THz modulation, especially the spatial modulation devices, are still insufficient. Here, we present a novel approach for generating arbitrary wavefronts of a THz beam is …
Optically controlled metasurfaces for dynamic dual-mode …
WebbFocus Area Research Institute Project Title Project Description A*STAR Supervisor Designation Email Address Website University Collaborator University Webb18 feb. 2016 · THz time-domain spectroscopy (THz-TDS) demonstrates that THz waves are emitted from the metasurfaces irradiated by an ultrashort pulse laser. The mechanism of the THz wave emission is discussed. Moreover, numerical simulation suggests how chiral metasurfaces can be improved for emission of circularly polarized THz waves. 2 buro catch
Nonlinear Plasmonic Metasurface Terahertz Emitters for Compact …
Webb7 apr. 2024 · Vortex and vector terahertz (THz) beams with inhomogeneous polarization states have become a considerable hot topic in the last decade due to their important roles in multiplexed wireless data transmission. However, the technical instruments to form and evaluate such beams are rather limited, as they are mainly collected in the visible range. … Webb1 apr. 2024 · The designed homogeneous metasurface can be dynamically tuned from a broadband absorber to a reflecting surface by thermally stimulus. At room temperature, … Webb27 nov. 2024 · In this paper, we demonstrate that efficient phase modulation of THz waves can be addressed by an active and enhanced resonant metamaterial embedded with a … hammerhead shark tattoo ideas