Nanocavity antenna array for enhancing extraordinary optical transmission of light through a metallic nanoslit

• The transmission of light through a single nanoslit milled in the metallic film is enhanced by using an array of nanocavity antennas. It is shown that transmission efficiency through a 25-nm-wide silver nanoslit can be enhanced to eta = 151 when six pairs of nanostrips are placed 50 nm away from the input surface of the silver film at wavelength lambda(0) = 1 mu m. The influences of both the nanoslit position and the slit-to-strip distance on the extraordinary transmission are investigated, and the physical mechanism is explained.

Nyckelord

wave-guides

apertures

slit

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)