Graphene-coated tapered nanowire infrared probe: a comparison with metal-coated probes

被引：23

作者：

Zhu, Bofeng ^{[1
,2
]}

Ren, Guobin ^{[1
,2
]}

Gao, Yixiao ^{[1
,2
]}

Yang, Yang ^{[3
]}

Lian, Yudong ^{[1
,2
]}

Jian, Shuisheng ^{[1
,2
]}

机构：

[1] Beijing Jiaotong Univ, Key Lab All Opt Network & Adv Telecommun Network, Beijing 100044, Peoples R China

[2] Beijing Jiaotong Univ, Inst Lightwave Technol, Beijing 100044, Peoples R China

[3] Tianjin Univ Technol, Coll Sci, Dept Phys, Tianjin 300191, Peoples R China

来源：

OPTICS EXPRESS | 2014年 / 22卷 / 20期

基金：

中国国家自然科学基金;

关键词：

WAVE-GUIDES; PHOTONICS; PLASMONS; BREAKING; SILICON; GAS;

D O I：

10.1364/OE.22.024096

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We propose in this paper a graphene-coated tapered nanowire probe providing strong field enhancement in the infrared regimes. The analytical field distributions and characteristic equation of the supported surface plasmons mode are derived. Based on the adiabatic approximation, analytic methods are adopted in the investigation of field enhancement along the tapered region and show well consistence with the rigorous numerical simulations. Both the numerical and analytical results have shown that the graphene-coated nanowire probe could achieve an order of magnitude larger field enhancement than the metal-coated probes. The proposed probe may have promising applications for single molecule detection, measurement and nano-manipulation techniques. (C) 2014 Optical Society of America

引用

页码：24096 / 24103

页数：8

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