Various evaluations of a diffractive transmitted field of light through a one-dimensional metallic grating with subwavelength slits

被引：4

作者：

Hu, Bin ^{[1
]}

Gu, Ben-Yuan ^{[2
]}

Dong, Bi-Zhen ^{[2
]}

Zhang, Yan ^{[3
]}

Liu, Ming ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Microelect, Beijing 100029, Peoples R China

[2] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China

[3] Capital Normal Univ, Dept Phys, Beijing 100037, Peoples R China

来源：

CENTRAL EUROPEAN JOURNAL OF PHYSICS | 2010年 / 8卷 / 03期

关键词：

evaluations of transmitted light; metallic grating; subwavelength slits; surface plasmon polaritons; EXTRAORDINARY OPTICAL-TRANSMISSION; HOLE ARRAYS;

D O I：

10.2478/s11534-009-0125-6

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We compare the Fresnel-Kirchhoff diffraction formula, the superposition of cylindrical waves, and the twodimensional (2D) Green's function diffraction formula with a rigorous vector algorithm in calculating the near and intermediately transmitted field of light through a one-dimensional metallic grating with subwavelength slits. It is found that the results calculated by the 2D Green's function diffraction formula coincide well with the precise result. The other evaluations deviate from the exact result by varying proportions. Our findings may provide a useful and precise way to analyze the transmitted field features of a metallic grating and subsequent possibility of achieving optimal designs for metallic optical elements with subwavelength scale.

引用

页码：448 / 454

页数：7

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