Transmission resonances of metallic compound gratings with subwavelength slits

被引：130

作者：

Skigin, DC ^{[1
]}

Depine, RA ^{[1
]}

机构：

[1] Univ Buenos Aires, Fac Ciencias Exactas & Nat, Grp Electromagnetismo Aplicada, Dept Fis, RA-1428 Buenos Aires, DF, Argentina

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 95卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.95.217402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Transmission metallic gratings with subwavelength slits are known to produce enhanced transmitted intensity for certain resonant wavelengths. One of the mechanisms that produce these resonances is the excitation of waveguide modes inside the slits. We show that by adding slits to the period, the transmission maxima are widened and, simultaneously, this generates phase resonances that appear as sharp dips in the transmission response. These resonances are characterized by a significant enhancement of the interior field.

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页数：4

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