Diffractive coupling in gold nanoparticle arrays and the effect of disorder

被引：100

作者：

Auguie, Baptiste ^{[1
]}

Barnes, William L. ^{[1
]}

机构：

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

来源：

OPTICS LETTERS | 2009年 / 34卷 / 04期

基金：

英国工程与自然科学研究理事会;

关键词：

APPROXIMATION; PARTICLES; LIGHT;

D O I：

10.1364/OL.34.000401

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Two-dimensional arrays of gold nanoparticles with a periodicity commensurate with the wavelength of resonant excitation of localized plasmons have been shown to exhibit a strong long-range interaction between particles. We investigate experimentally the effect of varying the degree of disorder in the geometrical arrangement from a periodic to a disordered lattice with constant occupancy. We also investigate the effect of disorder arising from variations in particle size for a regular lattice, and the effect this has on the broadening of the spectral line shape is discussed. A coupled dipole model is used to describe the observed spectral features. (c) 2009 Optical Society of America

引用

页码：401 / 403

页数：3

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