Reflective 2D diffraction grating based on short pitch chiral liquid crystal Ghent University
Thermotropic liquid crystals have recently become popular for use in optical components for augmented and virtual reality. Chiral liquid crystal (CLC), is of particular interest due to the formation of a photonic bandgap that allows for the creation of polarization-sensitive reflective optical components. Previous investigations have studied 2D diffraction gratings based on long-pitch (5 mu m) CLC in combination with a 2D periodic alignment ...