Enhanced transmission of microwave radiation in one-dimensional metallic gratings with subwavelength aperture

被引：81

作者：

Akarca-Biyikli, SS ^{[1
]}

Bulu, I ^{[1
]}

Ozbay, E ^{[1
]}

机构：

[1] Bilkent Univ, Dept Phys, TR-06800 Ankara, Turkey

来源：

APPLIED PHYSICS LETTERS | 2004年 / 85卷 / 07期

关键词：

D O I：

10.1063/1.1783013

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report a theoretical and experimental demonstration of enhanced microwave transmission through subwavelength apertures in metallic structures with double-sided gratings. Three different types of aluminum gratings (sinusoidal, symmetric rectangular, and asymmetric rectangular shaped) are designed and analyzed. Our samples have a periodicity of 16 mm, and a slit width of 2 mm. Transmission measurements are taken in the 10-37.5 GHz frequency spectrum, which corresponds to 8-30 mm wavelength region. All three structures display significantly enhanced transmission around surface plasmon resonance frequencies. The experimental results agree well with finite-difference-time-domain based theoretical simulations. Asymmetric rectangular grating structure exhibits the best results with similar to50% transmission at 20.7 mm, enhancement factor of similar to25, and +/-4degrees angular divergence. (C) 2004 American Institute of Physics.

引用

页码：1098 / 1100

页数：3

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