Surface-enhanced Raman scattering effects of gold and InSb nanoparticles at THz frequencies

被引：4
|
作者：
Zhang, Yong Ming [1 ]
Ren, Guang Jun [1 ]
Yao, Jian Quan [2 ]
机构：
[1] Tianjin Univ Technol, Minist Educ, Engn Res Ctr Commun Devices & Technol, Sch Elect Informat Engn,Tianjin Key Lab Film Elec, Tianjin 300384, Peoples R China
[2] Tianjin Univ, Inst Laser & Optoelect, Key Lab Optoelect Informat Sci & Technol, Coll Precis Instrument & Optoelect Engn,Minist Ed, Tianjin 300072, Peoples R China
来源：
OPTICS COMMUNICATIONS | 2015年 / 341卷
关键词：
SERS; Nanoparticles; Gold; InSb; Terahertz; FDTD; PLASMON RESONANCE SPECTROSCOPY; ULTRAVIOLET; ARRAYS; SERS; SEMICONDUCTORS; DYNAMICS; SIZE;
D O I：
10.1016/j.optcom.2014.12.033
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We present here a theoretical analysis of the possibility to combine SERS with THz by investigating the electromagnetic enhancement effects of gold and InSb nanoparticles under THz excitation. By means of the FDTD simulations, the electrical field enhancement, and thus the SERS enhancement factor of the gold and InSb nanoparticles with different sizes and interparticle separations are demonstrated, which indicate that the SERS effect exists in THz range as well and the SERS enhancement factor could reach 109 under the condition of certain size and interparticle distance. Therefore the SERS effect could be extended from ultraviolet, visible and near-infrared to THz regime. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：173 / 177
页数：5
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