Light transmission coefficients by subwavelength aluminum gratings with dielectric layers

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• 作者：L. M. Blinov ; V. V. Lazarev ; S. G. Yudin…
• 刊名：Journal of Experimental and Theoretical Physics
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：123
• 期：5
• 页码：778-783
• 全文大小：
• 刊物类别：Physics and Astronomy
• 刊物主题：Particle and Nuclear Physics; Classical and Quantum Gravitation, Relativity Theory; Elementary Particles, Quantum Field Theory; Solid State Physics;
• 出版者：Pleiades Publishing
• ISSN：1090-6509
• 卷排序：123

文摘

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.