Transmission resonances in rectangular hole trimer arrays: the role of unit configuration

被引：0

作者：

Liu, Jian-Qiang ^{[1
,2
]}

Wang, Guo-Dong ^{[1
]}

Wang, Qian-Jin ^{[1
]}

Chen, San ^{[1
]}

Wu, Shan ^{[1
]}

Zhu, Yong-Yuan ^{[1
]}

机构：

[1] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China

[2] Jiujiang Univ, Coll Sci, Jiujiang 332005, Peoples R China

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2012年 / 45卷 / 03期

基金：

中国博士后科学基金;

关键词：

EXTRAORDINARY OPTICAL-TRANSMISSION;

D O I：

10.1088/0022-3727/45/3/035101

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We fabricated trimer arrays consisting of three identical rectangular holes in each unit in silver films and measured the transmission spectra in the near-infrared region. Both the simulation using the finite difference time domain method and the experiment measurement show that the unit configuration plays a crucial role in the degeneracy of the transmission peak, which arises from the scattering of electromagnetic wave between adjacent units and electromagnetic coupling among holes in each unit. The field distribution suggests that the role an individual hole plays in the transmission resonance depends on the position of each hole and the surface plasmon polaritons' propagation direction. The results provide an additional way to tune the degeneracy of the transmission resonance peak in subwavelength metallic structures, which may find applications such as in filter devices, sensing, and the related nanophotonic components.

引用

页数：6