Research

Our group developed a new type of time-variant optical metasurface with which phase modulation in both space and time is

Metamaterial-based optical cloaks have thus far used volumetric distribution of the material properties to gradually bend light and thereby obscure

Holography, a revolutionary 3D imaging technique, has been developed for storing and recovering the amplitude and phase of light scattered

We experimentally demonstrate the focusing of visible light with ultra-thin, planar metasurfaces made of concentrically perforated, 30-nm-thick gold films. The

The precise manipulation of a propagating wave using phase control is a fundamental building block of optical systems. The wavefront