Chiro-optical characterization of self-assembled plasmonic nanostructures

In order to control the circular polarization of light at nanoscale, complex structures can be realized. Among different fabrication techniques, self-assembled approach can produce high reproducible, low cost, large area asymmetric metasurfaces that present different optical functionalities, and in particular can exhibit chiral optical response both in the near field and in the far field. Here we show the optical chiral properties of different self-assembled metasurfaces measured by different characterization techniques, both in linear and nonlinear regime.