Guided subwavelength plasmonic mode supported by a slot in a thin metal film

被引：264

作者：

Veronis, G ^{[1
]}

Fan, SH ^{[1
]}

机构：

[1] Stanford Univ, Dept Elect Engn, Stanford, CA 94305 USA

来源：

OPTICS LETTERS | 2005年 / 30卷 / 24期

关键词：

D O I：

10.1364/OL.30.003359

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate the existence of a bound optical mode supported by a slot in a thin metallic film deposited on a substrate, with slot dimensions much smaller than the wavelength. The modal size is almost completely dominated by the near field of the slot. Consequently, the size is very small compared with the wavelength, even when the dispersion relation of the mode approaches the light line of the surrounding media. In addition, the group velocity of this mode is close to the speed of light in the substrate, and its propagation length is tens of micrometers at the optical communication wavelength. (c) 2005 Optical Society of America.

引用

页码：3359 / 3361

页数：3

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