Subwavelength light confinement and propagation: A numerical study of a two-layer silver film with perforated holes

被引：0
|
作者：
Reed, Jennifer M. [1 ]
Wang, Haining [1 ,2 ]
Guo, Yingnan [1 ,3 ]
Zou, Shengli [1 ]
机构：
[1] Univ Cent Florida, Dept Chem, Orlando, FL 32816 USA
[2] Beihang Univ, Beijing Key Lab Bioinspired Energy Mat & Devices, Sch Chem & Environm, Beijing 100191, Peoples R China
[3] Dalian Univ Technol, Sch Phys & Optoelect Technol, Dalian 116024, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2013年 / 103卷 / 16期
基金：
美国国家科学基金会;
关键词：
SLOT WAVE-GUIDES; DISCRETE-DIPOLE APPROXIMATION; SCATTERING;
D O I：
10.1063/1.4826441
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Confinement and propagation of light under the diffraction limit is a substantial challenge for the development of waveguides as components in subwavelength optical devices. Light confinement and propagation at optical frequencies in a two-layer silver film with a periodic array of holes is investigated in a numerical study using the discrete dipole approximation method. Extraordinary subwavelength confinement and propagation of light can be obtained along an extremely subwavelength cross section of a region as small as 10 x 20 nm(2) at a distance of over 10 mu m. This study provides rational design of waveguides under subwavelength dimensions. (C) 2013 AIP Publishing LLC.
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