Dual-surface plasmon excitation with thin metallic nanoslits

被引：18

作者：

Karabchevsky, Alina ^{[1
]}

Auslender, Mark ^{[1
]}

Abdulhalim, Ibrahim ^{[1
]}

机构：

[1] Ben Gurion Univ Negev, Dept Electroopt Engn, IL-84105 Beer Sheva, Israel

来源：

JOURNAL OF NANOPHOTONICS | 2011年 / 5卷

关键词：

surface plasmon; extended surface plasmon resonance; extraordinary transmission; dual plasmons; grating; symmetrical grating; antisymmetrical grating; EXTRAORDINARY OPTICAL-TRANSMISSION; RESONANCES; GRATINGS;

D O I：

10.1117/1.3609276

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Based on the experimental results and comparison between analytical and rigorous calculations, we have found that dual-surface plasmon (SP) waves are excited at both interfaces of a periodic array of thin metallic nanoslits: one at the grating-substrate interface and one at the grating-superstrate interface. Dual plasmons are excited for each diffraction order at two different wavelengths when the substrate differs from the superstrate. The splitting of the plasmons was investigated as a function of the refractive index difference between the substrate and superstrate. Verification of the extended nature of the double SPs is presented by comparing the rigorous calculation and analytic dispersion relation of extended SPs. (C) 2011 Society of Photo-Optical Instrumentation Engineers (SPIE). [DOI: 10.1117/1.3609276]

引用

页数：9