An optimization procedure for the design of all-optical switches based on metal-dielectric nanocomposites

We present a procedure to optimize the performance of all-optical switches based on metal-dielectric nanocomposites. The management of constructive and destructive interference between the third-, fifth- and seventh-order susceptibilities allowed characterization of optimal conditions for ultrafast switching with reduced losses. Proof-of-principle experiments with metal-colloids are reported to validate the method.