Disorder-enabled pure circular dichroism in bilayer plasmonic metasurfaces

Abstract

In optical metasurfaces, disorder, e.g. in the arrangement or shape of its building blocks, is usually associated with a deterioration of the optical properties due to an increase of incoherent scattering. However, more recently, researchers have started recognizing the introduction of controlled disorder as a strategy to diversify engineering options of metasurfaces. For example, the introduction of disorder can be used to decrease unwanted anisotropy in their optical response [1] and enhance the information density encoded in wavefront shaping metasurfaces [2]. Show more