Resonant optical transmission through thin metallic films with and without holes
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TLDR
Replacing the hole array by a continuous metallic film, it is shown that resonant extraordinary transmission can still occur, provided the film is modulated.Abstract:
Using a rigorous electromagnetic analysis of two-dimensional (or crossed) gratings, we account, in a first step, for the enhanced transmission of a sub-wavelength hole array pierced inside a metallic film, when plasmons are simultaneously excited at both interfaces of the film. Replacing the hole array by a continuous metallic film, we then show that resonant extraordinary transmission can still occur, provided the film is modulated. The modulation may be produced in both a one-dimensional and a two dimensional geometry either by periodic surface deformation or by adding an array of high index pillars. Transmittivity higher than 80% is found when surface plasmons are excited at both interfaces, in a symmetric configuration.read more
Citations
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Surface plasmon subwavelength optics
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Book
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References
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Journal ArticleDOI
Extraordinary optical transmission through sub-wavelength hole arrays
Thomas W. Ebbesen,Thomas W. Ebbesen,Henri J. Lezec,H. F. Ghaemi,Tineke Thio,Peter A. Wolff,Peter A. Wolff +6 more
TL;DR: In this article, the optical properties of submicrometre cylindrical cavities in metallic films were explored and it was shown that arrays of such holes display highly unusual zero-order transmission spectra at wavelengths larger than the array period, beyond which no diffraction occurs.
Journal ArticleDOI
Theory of extraordinary optical transmission through subwavelength hole arrays.
Luis Martín-Moreno,Francisco J. Garcia-Vidal,Henri J. Lezec,K. M. Pellerin,Tineke Thio,John B. Pendry,Thomas W. Ebbesen +6 more
TL;DR: A fully three-dimensional theoretical study of the extraordinary transmission of light through subwavelength hole arrays in optically thick metal films shows that the enhancement of transmission is due to tunneling through surface plasmons formed on each metal-dielectric interface.
Journal ArticleDOI
Surface plasmons enhance optical transmission through subwavelength holes
TL;DR: In this article, it was shown that the minima are the collection of loci for Wood's anomaly, which occurs when a diffracted beam becomes tangent to the film, and that the maxima were the result of a resonant excitation of surface plasmons (SP's).
Journal ArticleDOI
Transmission Resonances on Metallic Gratings with Very Narrow Slits
TL;DR: In this paper, a transfer matrix formalism and a quasianalytical model based on a modal expansion were used to transfer light from the upper surface to the lower one.
Journal ArticleDOI
Negative role of surface plasmons in the transmission of metallic gratings with very narrow slits
Qing Cao,Philippe Lalanne +1 more
TL;DR: It is shown that the surface plasmon contribution is not the prime effect and that waveguide mode resonance and diffraction are responsible for the extraordinary transmission of metallic grating with very narrow slits and the transmittance of subwavelength metallic gratings is always nearly zero.