NEWSROOM

A laser can rotate liquid crystal molecules around silicon nanostructures, temporarily reprogramming a metasurface's optical response without electrodes. The international team showed the light shifts the device's resonance and controls third-harmonic generation, converting infrared light into visible green-yellow light.

Researchers at Huazhong University of Science and Technology have demonstrated a fully tunable on-chip structured light meta-generator that maps multidimensional Poincare spheres. Using inverse-designed multimode meta-waveguides and multichannel coherent phase and amplitude control, the silicon photonic chip multiplexes higher-order waveguide modes and independently synthesizes polarization and spatial wavefronts, steering output to arbitrary points across polarization, OAM,