Engineering the second harmonic generation pattern from coupled gold nanowires

被引：43

作者：

Benedetti, A. ^{[1
]}

Centini, M. ^{[1
]}

Sibilia, C. ^{[1
]}

Bertolotti, M. ^{[1
]}

机构：

[1] Univ Rome, Dipartimento Energet, I-00161 Rome, Italy

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 2010年 / 27卷 / 03期

关键词：

SECOND-HARMONIC GENERATION; NONLINEAR-OPTICAL PROPERTIES; NOBLE-METAL NANOPARTICLES; SURFACE-PLASMONS; MAGNETIC METAMATERIALS; RAYLEIGH-SCATTERING; INVERSION SYMMETRY; STRATIFIED MEDIA; GREENS TENSOR; REFLECTION;

D O I：

10.1364/JOSAB.27.000408

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We numerically investigated second harmonic generation from systems composed of two coupled gold nanowires. The developed method allows one to arbitrarily change the shape of the wire cross section in order to explore the generated and scattered field patterns. Our results suggest that the overall second harmonic generation is related to the electromagnetic energy per unit length stored in the gap area between the wires. These geometrical considerations make further optimization possible. As an example we discuss the possibility to select dipolar emission and/or quadrupolar emission patterns. The selection mechanism responsible for this kind of emission can be traced back to the interaction between nonlinear sources with the surface plasmon resonance of the metallic wires. (C) 2010 Optical Society of America

引用

页码：408 / 416

页数：9

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