Diffractive chains of plasmonic nanolenses: combining near-field focusing and collective enhancement mechanisms

被引：7
作者：
Almpanis, E. [1 ]
Papanikolaou, N. [1 ]
Auguie, B. [2 ]
Tserkezis, C. [3 ,4 ,5 ]
Stefanou, N. [5 ]
机构：
[1] NCSR Demokritos, Inst Adv Mat Physicochem Proc Nanotechnol & Micro, Dept Microelect, GR-15310 Athens, Greece
[2] Victoria Univ Wellington, Sch Chem & Phys Sci, MacDiarmid Inst Adv Mat & Nanotechnol, Wellington 6140, New Zealand
[3] DIPC, Donostia San Sebastian 20018, Spain
[4] Ctr Fis Mat CSIC UPV EHU, Donostia San Sebastian 20018, Spain
[5] Univ Athens, Sect Solid State Phys, GR-15784 Athens, Greece
来源：
OPTICS LETTERS | 2012年 / 37卷 / 22期
关键词：
PHOTONIC CRYSTALS; NANOPARTICLE; TRANSMISSION;
D O I：
10.1364/OL.37.004624
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We study, by means of full-electrodynamic calculations using the layer-multiple-scattering method, the effect of diffractive coupling on the enhancement of the local electromagnetic field in periodic arrays of nanolenses consisting of three silver spheres with progressively decreasing sizes and separations. The interaction between the hot-spot modes of an isolated nanolens with the Rayleigh-Wood anomalies of the periodic lattice leads to a further enhancement of the local field intensity, which can be controlled by an appropriate choice of the geometrical parameters involved. (C) 2012 Optical Society of America
引用
收藏
页码：4624 / 4626
页数：3
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