Figure 1
From: Ultrabroadband, More than One Order Absorption Enhancement in Graphene with Plasmonic Light Trapping
Plasmonic absorbers for light trapping and absorption enhancement in graphene.
(a) Schematic of a plasmonic absorber comprising arrays of periodical metallic crosses backed by a metallic mirror. (b) A similar structure as in (a) but the metallic crosses have 20 nm wide cross gaps. (c) Schematic of a absorber consisting of two types of crosses with different dimensions to expand the absorption bandwidth. The top views of unit cells with geometric parameters are shown in the bottom.
