Surface plasmon enhanced optical transmission through subwavelength apertures with carbon nanotubes

Abstract

Optical transmission through subwavelength holes perforated in metal films in the Terahertz region is enhanced through the coupling of spoof surface plasmons (SSPs) and light. It is known that light transmitted inside the subwavelength hole cavity peaks at certain wavelengths, which correspond to the excitation of the SP modes. This transmission is boosted as the SP modes in both sides of the metal are matched. In this paper, we show that hybridization of plasmonic metal hole-arrays with semiconducting single-walled carbon nanotubes leads to enhanced transmission.