Dielectric Metasurface Enabled Multispectral Polarisation Imaging

Polarisation imaging is a technique used to enhance and distinguish objects and surface characteristics. In particular, it is used in agricultural drone and small-satellite applications such as for crop classification [1] and monitoring vegetation [2]. Small-satellites, in particular, form an accessible remote-sensing platform for universities, research groups, industry, and government bodies due to their lower costs compared to large satellites. However, their size and weight limit inhibit the use of conventional full-Stokes polarisation imaging methods. We propose that metasurfaces can perform complex imaging in ultra-compact systems and present a metasurface designed for polarisation imaging at two distinct wavelengths.