Electric field enhancement with plasmonic colloidal nanoantennas excited by a silicon nitride waveguide

被引：20
|
作者：
Darvishzadeh-Varcheie, Mahsa [1 ]
Guclu, Caner [1 ]
Ragan, Regina [2 ]
Boyraz, Ozdal [1 ]
Capolino, Filippo [1 ]
机构：
[1] Univ Calif Irvine, Dept Elect Engn & Comp Sci, Irvine, CA 92697 USA
[2] Univ Calif Irvine, Dept Chem Engn & Mat Sci, Irvine, CA 92697 USA
来源：
OPTICS EXPRESS | 2016年 / 24卷 / 25期
基金：
美国国家科学基金会;
关键词：
RAMAN-SCATTERING; FANO RESONANCES; OPTICAL SENSOR; SERS; NANOPARTICLES; SILVER; NANOCLUSTERS; METASURFACES; SPECTROSCOPY; NANOSPHERES;
D O I：
10.1364/OE.24.028337
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We investigate the feasibility of CMOS-compatible optical structures to develop novel integrated spectroscopy systems. We show that local field enhancement is achievable utilizing dimers of plasmonic nanospheres that can be assembled from colloidal solutions on top of a CMOS-compatible optical waveguide. The resonant dimer nanoantennas are excited by modes guided in the integrated silicon nitride waveguide. Simulations show that 100-fold electric field enhancement builds up in the dimer gap as compared to the waveguide evanescent field amplitude at the same location. We investigate how the field enhancement depends on dimer location, orientation, distance and excited waveguide mode. (C) 2016 Optical Society of America
引用
收藏
页码：28337 / 28352
页数：16
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