Fudan University, China
Manipulating
light in the desired manner is highly desired in photonics research. Recently, gradient
metasurfaces, consisting of carefully designed inhomogeneous microstructures
with carefully tailored optical responses, were found to exhibit strong
abilities to control light propagations, leading to amazing physical effects
such as anomalous refraction/reflection, surface plasmon coupling, flat meta-lens,
meta-hologram, special beam generations. In this talk, we will introduce our
recent progresses along this direction, and in particular the concepts and applications
for realizing the high-efficiency and multi-functional controls of the lights
in far-field and near-field regimes.