Dependence on surface profile in grating-assisted coupling of light to surface plasmon-polaritons

被引：26

作者：

Giannattasio, A ^{[1
]}

Hooper, IR ^{[1
]}

Barnes, WL ^{[1
]}

机构：

[1] Univ Exeter, Sch Phys, Exeter EX4 4QL, Devon, England

来源：

OPTICS COMMUNICATIONS | 2006年 / 261卷 / 02期

关键词：

D O I：

10.1016/j.optcom.2005.12.016

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Grating coupling of light to surface plasmon-polaritons (SPPs) supported by a thin metal film depends on the detailed geometry of the grating used to couple the incident light to the SPP modes. Here we show experimental and theoretical evidence that, in the case of square gratings having the same pitch and depth, the maximum coupling of light to the SPPs is achieved when the ratio between the groove width and the pitch of the grating is equal to 1/2. A straightforward explanation involving a Fourier analysis of the different grating profiles is given and compared with the experimental results. (C) 2005 Elsevier B.V. All rights reserved.

引用

页码：291 / 295

页数：5