Arthur Baroni

1 Introduction Ultrastructure, a term referring to nanoscale structures too small to be imaged using standard optical light microscopy, can be probed indirectly by measuring their interaction with photons, electrons or neutrons resulting in scattering, diffraction or a change in polarization state.

Abstract Intensity and polarization are two fundamental components of light. Independent control of them is of tremendous interest in many applications. In this paper, we propose a general vectorial encryption method, which enables arbitrary far-field light distribution with the local polarization, including orientations and ellipticities, decoupling intensity from polarization across a broad bandwidth using geometric phase metasurfaces.

Abstract Controlling light properties with diffractive planar elements requires full-polarization channels and accurate reconstruction of optical signal for real applications. Here, we present a general method that enables wavefront shaping with arbitrary output polarization by encoding both phase and polarization information into pixelated metasurfaces. We apply this concept to convert an input plane wave with linear polarization to a holographic image with arbitrary spatial output polarization.