Abstract
It is experimentally shown that the near- and mid-IR transmission coefficient of a 17-nm silver layer sputtered onto a Lavsan film with an irregular system of small holes is 2–6 times higher than the transmission coefficient of the same layer on a nonperforated continuous Lavsan film. This effect is wideband. It is observed at wavelengths of 1500–5000 nm. The physical-optics calculation of transmission of light through the holes in a silver film that are identical to the holes in the Lavsan film is unable to explain this effect since the hole diameter (200 nm) is too small. The system microstructure is studied with the atomic-force and electron microscopes. A possible mechanism of the effect of extraordinary transmission of radiation is discussed.
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Original Russian Text © I.V. Bykov, A.P. Vinogradov, A.V. Dorofeenko, A.M. Merzlikin, I.A. Ryzhikov, M.V. Sedova, A.S. Ilyin, 2009, published in Radiotekhnika i Elektronika, 2009, Vol. 54, No. 5, pp. 592–596.
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Bykov, I.V., Vinogradov, A.P., Dorofeenko, A.V. et al. Extraordinary transmission of light through an irregular system of holes in a metal film. J. Commun. Technol. Electron. 54, 565–569 (2009). https://doi.org/10.1134/S106422690905009X
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DOI: https://doi.org/10.1134/S106422690905009X