| Abstract: | A structure for broadband light funneling comprises a two-dimensional
periodic array of connected ultrasubwavelength apertures, each aperture
comprising a large sub-aperture that aids in the coupling of the incoming
incident light and a small sub-aperture that funnels a significant
fraction of the incident light power. The structure possesses all the
capabilities of prior extraordinary optical transmission platforms, yet
operates nonresonantly on a distinctly different mechanism. The structure
demonstrates efficient ultrabroadband funneling of optical power confined
in an area as small as .about.(.lamda./500).sup.2, where optical fields
are enhanced, thus exhibiting functional possibilities beyond resonant
platforms. |