Complex amplitude and phase control of light using metasurface holograms – the challenges, opportunities and perspectives

Metasurfaces, consisting of subwavelength nanostructures, have been considered a future holographic device that demonstrates unprecedented ability to control electromagnetic waves. In this invited talk, a general introduction to metasurface holography will be presented along with physical instruments and applications. In addition, complete complex-amplitude modulation holograms will be discussed in their theoretical and experimental demonstrations. Then we will discuss our vision of the future of this field including optical metasurfaces and meta-holograms.