Physics – Condensed Matter – Materials Science
Scientific paper
2003-11-26
Phys. Rev. E 69, 026601 (2004)
Physics
Condensed Matter
Materials Science
Accepted for publication in Phys. Rev. E
Scientific paper
10.1103/PhysRevE.69.026601
In this work we explore the transmission properties of a single slit in a metallic screen. We analyze the dependence of these properties on both slit width and angle of incident radiation. We study in detail the crossover between the subwavelength regime and the geometrical-optics limit. In the subwavelength regime, resonant transmission linked to the excitation of waveguide resonances is analyzed. Linewidth of these resonances and their associated electric field intensities are controlled by just the width of the slit. More complex transmission spectra appear when the wavelength of light is comparable to the slit width. Rapid oscillations associated to the emergence of different propagating modes inside the slit are the main features appearing in this regime.
Bravo-Abad Jorge
Garcia-Vidal Francisco J.
Martin-Moreno Luis
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