Mechanisms underlying extraordinary transmission enhancement in subwavelength hole arrays

被引：20

作者：

Biswas, R. ^{[1
]}

Neginhal, S.

Ding, C. G.

Puscasu, I.

Johnson, E.

机构：

[1] Iowa State Univ, Dept Phys & Astron, Ctr Microelect Res, Ames Lab, Ames, IA 50011 USA

[2] Iowa State Univ, Dept Elect, Ctr Microelect Res, Ames Lab, Ames, IA 50011 USA

[3] Iowa State Univ, Dept Comp Engn, Ctr Microelect Res, Ames Lab, Ames, IA 50011 USA

[4] ICx Photon, Ion Opt Inc, Billerica, MA 01821 USA

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 2007年 / 24卷 / 10期

关键词：

D O I：

10.1364/JOSAB.24.002589

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Extraordinary transmission in subwavelength hole arrays has been interpreted by surface-plasmon models and diffraction-based models. To understand controversial mechanisms of transmission enhancement, we simulate hole arrays, using a rigorous Fourier-space scattering matrix simulation. At the enhanced transmission maximum there are large evanescent diffracted fields above the metal surface. These evanescent fields are decomposed into longitudinal and transverse components. Both components are comparable in magnitude. The longitudinal field is 15%-20% larger in the square lattice. Transverse fields are slightly larger in the triangular lattice. The longitudinal and transverse evanescent surface fields are related to bound surface modes of the hole array.

引用

页码：2589 / 2596

页数：8

共 31 条

[1] Surface plasmon polaritons and their role in the enhanced transmission of light through periodic arrays of subwavelength holes in a metal film [J].