Surface enhanced infrared spectroscopy with gold strip gratings

被引：57

作者：

Wang, Tao ^{[1
]}

Vu Hoa Nguyen ^{[2
]}

Buchenauer, Andreas ^{[2
]}

Schnakenberg, Uwe ^{[2
]}

Taubner, Thomas ^{[1
,3
]}

机构：

[1] Rhein Westfal TH Aachen, Inst Phys 1A 1, D-52056 Aachen, Germany

[2] Rhein Westfal TH Aachen, Inst Mat Elect Engn 1, D-52074 Aachen, Germany

[3] Fraunhofer Inst Laser Technol ILT, D-52074 Aachen, Germany

来源：

OPTICS EXPRESS | 2013年 / 21卷 / 07期

关键词：

OPTICAL-PROPERTIES; ABSORPTION; ARRAYS; METAMATERIALS; SCATTERING; FILMS; AU;

D O I：

10.1364/OE.21.009005

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We investigate surface enhanced infrared absorption (SEIRA) spectroscopy with gold strip gratings made by standard optical lithography. By exciting surface plasmon polaritons on both air-gold and gold-substrate interfaces, the resonance of the 1D gratings is linearly tunable with the grating period. With the field enhancement at the edge of the gold strips, a SEIRA enhancement factor more than 6000 for PMMA molecules is achieved. The strong SEIRA enhancement together with the easy fabrication makes the gold strip grating a promising candidate for SEIRA experiments. (C) 2013 Optical Society of America

引用

页码：9005 / 9010

页数：6

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