Resonant coupling of surface plasmons to radiation modes by use of dielectric gratings

被引：81

作者：

Park, S ^{[1
]}

Lee, G ^{[1
]}

Song, SH ^{[1
]}

Oh, CH ^{[1
]}

Kim, PS ^{[1
]}

机构：

[1] Hanyang Univ, Dept Phys, Seoul 133791, South Korea

来源：

OPTICS LETTERS | 2003年 / 28卷 / 20期

关键词：

D O I：

10.1364/OL.28.001870

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Efficient outcoupling of surface-plasma waves to radiation modes by use of dielectric diffraction gratings on a flat metallic surface is discussed. The dielectric gratings, which have a surface-relief structure with only several tens of nanometers in peak-to-trough height on a flat metal surface, can efficiently extract radiation modes propagating in free space from the surface-plasmon modes. An outcoupling efficiency of 50% is estimated with the rigorous coupled-wave diffraction theory, and it is confirmed by the experiment. (C) 2003 Optical Society of America.

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页码：1870 / 1872

页数：3

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