Holograms have always appealed to the imagination of both scientists and the general public. But wide angle and full colour holograms has proven elusive despite many years of research. In this article we explore some of the possibilities for making meta-surface holograms and how they can contribute to this lofty goal.
An attractive feature of meta-surfaces is the ability to encode different functionalities for different incident light, for example wavelength or polarization selective behaviour. This can be achieved by selecting and placing meta-atoms which have simultaneous but different effects for different incident light beams. In this example such a multi-functional meta-surface will be designed. The goal […]
The development of optics and photonics technology in areas such as sensing, telecom and display is on a constant quest for increasingly more compact and more performant assemblies. This article provides an overview of the various ways in which ultra-thin metasurfaces can be used to design compact beamshaping in various optical applications. The advantages of […]