Phase resonances in compound metallic gratings

被引：31

作者：

Skigin, DC ^{[1
]}

Fantino, AN ^{[1
]}

Grosz, SI ^{[1
]}

机构：

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

来源：

JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS | 2003年 / 5卷 / 05期

关键词：

resonance; diffraction grating; surface impedance boundary condition;

D O I：

10.1088/1464-4258/5/5/353

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We study the phase resonances in metallic compound gratings. The diffraction problem is solved by means of the modal method and the surface impedance boundary condition. The response of gratings made of various metals is analysed. Curves of specular efficiency, field amplitude and phase inside the grooves are shown and discussed for different wavelengths ranging from 0.21 to 32 mum. The results are compared with those previously obtained for a perfect conductor. In the case of a real metallic structure we observe that to have a phase resonance, a reflectance higher than 93% is necessary.

引用

页码：S129 / S135

页数：7

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