Transmission properties of terahertz waves through asymmetric rectangular aperture arrays on carbon nanotube films

• Main Authors: Yue Wang, Yijing Tong, Xin Zhang
• Format: Article
• Language: English
• Published: AIP Publishing LLC 2016-04-01
• Series: AIP Advances
• Online Access: http://dx.doi.org/10.1063/1.4946787

Transmission spectra of terahertz waves through a two-dimensional array of asymmetric rectangular apertures on super-aligned multi-walled carbon nanotube films were obtained experimentally. In this way, the anisotropic transmission phenomena of carbon nanotube films were observed. For a terahertz wave polarization parallel to the orientation of the carbon nanotubes and along the aperture short axis, sharp resonances were observed and the resonance frequencies coincided well with the surface plasmon polariton theory. In addition, the minima of the transmission spectra were in agreement with the location predicted by the theory of Wood’s anomalies. Furthermore, it was found that the resonance profiles through the carbon nanotube films could be well described by the Fano model.