In-plane 2D focusing of surface waves by ultrathin refractive structures

被引：23
|
作者：
Angelini, A. [1 ,2 ]
Lamberti, A. [1 ]
Ricciardi, S. [1 ]
Frascella, F. [1 ]
Munzert, P. [3 ]
De Leo, N. [2 ]
Descrovi, E. [1 ]
机构：
[1] Politecn Torino, Dept Appl Sci & Technol DISAT, I-10129 Turin, Italy
[2] Ist Nazl Ric Metrol INRIM, Nanofacil Piemonte, I-10135 Turin, Italy
[3] Fraunhofer Inst Appl Opt & Precis Engn IOF, D-07745 Jena, Germany
来源：
OPTICS LETTERS | 2014年 / 39卷 / 22期
关键词：
ELECTROMAGNETIC-WAVES; FLUORESCENCE; POLARIZATION; LIGHT;
D O I：
10.1364/OL.39.006391
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In an attempt to provide a fully dielectric platform for two-dimensional optical circuitry, we report on the focusing features of an ultrathin polymeric lens fabricated on a planar multilayer. The radiation coupled to surface modes sustained by the multilayer can be focused or waveguide-injected into linear ridges by exploiting a dielectric-loading mechanism successfully exploited for plasmons. The low losses of this photonic system also allow long propagation lengths in the visible spectral range. Experimental observations made by fluorescence imaging of the multilayer surface are well supported by computational data obtained through an effective index approach. (C) 2014 Optical Society of America
引用
收藏
页码：6391 / 6394
页数：4
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