Metasurface enables high-efficiency vectorial holography generating complex images with spatially varying polarization, for on-chip photonics

https://www.eurekalert.org/news-releases/1095496

"scalar holograms with uniform polarization limits amount of encoded information, overcome with vectorial holograms encoding both intensity/ polarization using less-bulky ultrathin metasurfaces... combines GS algorithm with wave-decomposition calculating scattering properties required for each meta-atom... precise control over reflection phases/ polarization states... high metasurface efficiency (nearly 68%), polarization-independent vectorial holography: imaging, data storage, encryption"