Two-dimensional angularly selective optical properties of gold nanoshell with holes

被引:9
|
作者
Qian, Jun [1 ]
Chen, Zongqiang [1 ]
Chen, Jing [1 ]
Li, Yudong [1 ]
Xu, Jingjun [1 ]
Sun, Qian [1 ]
机构
[1] Nankai Univ, Sch Phys, Minist Educ, Key Lab Weak Light Nonlinear Photon, Tianjin 300071, Peoples R China
来源
OPTICS EXPRESS | 2012年 / 20卷 / 13期
基金
高等学校博士学科点专项科研基金; 中国国家自然科学基金;
关键词
DISCRETE-DIPOLE APPROXIMATION; NANOPARTICLES; SCATTERING;
D O I
10.1364/OE.20.014614
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We studied the optical extinction properties of Au nanoshell with two holes by the discrete-dipole approximation method. We found that the extinction spectra of the nanoparticles are sensitive to the angle between the polarization vector of the incident light and either symmetrical axis of the hole on nanoshell and also the sizes of two holes. The nanostructure we proposed provides the additional dimensional angularly selectivity of the optical properties and the plasmon resonances redshift comparing with the nanocup. In addition, the conception of the "two-dimensional" symmetry breaking of the nanoparticle is suggested which can induce the two-dimensional spatial asymmetry of optical properties of nanoparticles. (C)2012 Optical Society of America
引用
收藏
页码:14614 / 14620
页数:7
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