Coupling efficiency of light to surface plasmon polariton for single subwavelength holes in a gold film

被引：74

作者：

Baudrion, Anne-Laure ^{[1
,2
]}

de Leon-Perez, Fernando ^{[3
]}

Mahboub, Oussama

Hohenau, Andreas ^{[1
,2
]}

Ditlbacher, Harald ^{[1
,2
]}

Garcia-Vidal, Francisco J. ^{[5
]}

Dintinger, Jose ^{[4
]}

Ebbesen, Thomas W. ^{[4
]}

Martin-Moreno, Luis ^{[3
]}

Krenn, Joachim R. ^{[1
,2
]}

机构：

[1] Karl Franzens Univ Graz, A-8010 Graz, Austria

[2] Erwin Schrodinger Inst Nanoscale Res, A-8010 Graz, Austria

[3] Univ Zaragoza, Fac Ciencias, ICMA, Dept Fis Mat Condensada, E-50009 Zaragoza, Spain

[4] Univ Strasbourg 1, ISIS, Lab Nanostruct, F-67000 Strasbourg, France

[5] Univ Autonoma Madrid, Dept Fis Teor Mat Condensada, E-28049 Madrid, Spain

来源：

OPTICS EXPRESS | 2008年 / 16卷 / 05期

关键词：

D O I：

10.1364/OE.16.003420

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

sThe excitation of surface plasmon polaritons (SPP) by focusing a laser beam on single subwavelength holes opened in a thin gold film is studied both experimentally and theoretically. By means of leakage radiation microscopy, quantitative measurements of the light-SPP coupling efficiency are performed for holes with different sizes and shapes. The system is studied theoretically by using a modal expansion method to calculate the fraction of the incident energy which is scattered by the hole into a surface plasmon. We demonstrate that a single subwavelength hole can be used to generate SPP with an efficiency up to 28%. (C) 2008 Optical Society of America.

引用

页码：3420 / 3429

页数：10

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