Numerical investigation of far-field circular dichroism and local chiral response of pseudo-chiral meta-surface with FEM

Circular dichroism spectroscopy is a sensitive and widely applied technique to detect chiral molecules. Recent studies have shown high prospects for plasmonic metasurfaces of pseudo-chiral nano-resonators in enhancing sensitivity. Here we study the far-field circular gold U-shaped by calculating Mueller matrix elements with Finite element method investigate its response light near field electric energy optical density.