Abstract
Spectral positions of plasmon resonances related to boundaries between a thin aluminum layer and dielectrics (air, glass, VDF–TrFE 65/35 ferroelectric copolymer, and indium tin oxide (ITO)) have been determined in the transmission spectra of aluminum gratings of three types with 30 × 30 μm2 dimensions and 350-, 400-, and 450-nm line periods. Experimental results agree well with spectral positions of plasmon resonances calculated for the normal incidence of TM-polarized light. In addition, maximum values of transmission coefficients in the region of λ ≈ 900–950 nm have been determined for glass–Al–copolymer and glass–ITO–Al–copolymer structures. These values are close to 100%, which shows that the effective optical aperture is two times greater than the geometric areas of slits.
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Original Russian Text © L.M. Blinov, V.V. Lazarev, S.G. Yudin, V.V. Artemov, S.P. Palto, M.V. Gorkunov, 2016, published in Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2016, Vol. 150, No. 5, pp. 896–902.
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Blinov, L.M., Lazarev, V.V., Yudin, S.G. et al. Light transmission coefficients by subwavelength aluminum gratings with dielectric layers. J. Exp. Theor. Phys. 123, 778–783 (2016). https://doi.org/10.1134/S1063776116110030
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DOI: https://doi.org/10.1134/S1063776116110030