Light transmission assisted by Brewster-Zennek modes in chromium films carrying a subwavelength hole array

Abstract

This work confirms that not only surface plasmons but many other kinds of electromagnetic eigenmodes should be considered in explaining the values of the transmittivity through a slab bearing a two-dimensional periodic corrugation. Specifically, the role of Brewster-Zennek modes appearing in metallic films exhibiting regions of weak positive dielectric constant. It is proposed that these modes play a significant role in the light transmission in a thin chromium film perforated with normal cylindrical holes, for appropriate lattice parameters.

arXiv comment5 pages, 4 figures. Published version

References in corpus (5)

• Transmission resonances on metallic gratings with very narrow slits
• Fano-type interpretation of red shifts and red tails in hole array transmission spectra
• Role of Wood anomalies in optical properties of thin metallic films with a bidimensional array of subwavelength holes
• Optical properties of tungsten thin films perforated with a bidimensional array of subwavelength holes
• Polarization effects in metallic films perforated with a bidimensional array of subwavelength rectangular holes

Cited by in corpus (4)

• Extraordinary optical transmission through metal films with sub wavelength holes and slits
• Plasmon mechanism of light transmission through a metal film or a plasma layer
• Origin of the Norton-type wave scattered by a sub-wavelength metallic slit
• Wood's anomalies and excitation of cyclic Sommerfeld resonances under plane wave scattering from a single dielectric cylinder at oblique incidence of light