Enhancement of Second-Harmonic Generation from Metal Nanoparticles by Passive Elements

被引：120
|
作者：
Czaplicki, Robert [1 ]
Husu, Hannu [1 ,3 ]
Siikanen, Roope [1 ]
Makitalo, Jouni [1 ]
Kauranen, Martti [1 ]
Laukkanen, Janne [2 ]
Lehtolahti, Joonas [2 ]
Kuittinen, Markku [2 ]
机构：
[1] Tampere Univ Technol, Dept Phys, Opt Lab, FI-33101 Tampere, Finland
[2] Univ Eastern Finland, Dept Math & Phys, FI-80101 Joensuu, Finland
[3] Ctr Metrol & Accreditat MIKES, FI-02151 Espoo, Finland
来源：
PHYSICAL REVIEW LETTERS | 2013年 / 110卷 / 09期
基金：
芬兰科学院;
关键词：
YAGI-UDA ANTENNA; GOLD NANOPARTICLES; PLASMONIC NANOANTENNAS; MAGNETIC METAMATERIALS; LIGHT; EMISSION; ARRAYS; PARTICLE;
D O I：
10.1103/PhysRevLett.110.093902
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We prepare arrays of gold nanoparticles that include both noncentrosymmetric particles with a second-order nonlinear optical response (active particles) and centrosymmetric particles with no second-order response (passive particles). The plasmon resonances of the active and passive particles are at distinct wavelengths, yet the passive particles modify the electromagnetic modes of the structure in such a way that second-harmonic generation from the active particles is enhanced. Our results provide a completely new concept for optimizing the nonlinear responses of metamaterials. DOI: 10.1103/PhysRevLett.110.093902
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页数：5
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