摘要
本文设计了多层膜金属狭缝阵列,并用有限元方法研究了该阵列的透射特性.结果表明,与传统的单层薄膜金属狭缝阵列相比,多层膜金属狭缝阵列可以实现介质层内局域电场增强,并在透射光谱中产生多个透射峰.此外,本文还研究了介质层的厚度、位置周期等对多层膜金属狭缝阵列透射特性的影响,这些结果将对调节透射峰的位置及更深刻理解多层膜金属狭缝的光学异常透射现象具有一定的指导意义.
In this paper, multilayer metallic slit arrays structure is proposed and its transmission properties are investigated using the finite element method. Results show that, compared with monolayer metallic slit arrays structure, multilayer metallic slit arrays can achieve enhanced electric fields in the dielectric layer and there are more transmission peaks in the spectra. In addition, the effects of the thickness and the position of the dielectric layer and the period of the arrays on the transmission property are also studied. These results would be helpful for tuning transmission peak and understanding the mechanism of EOT phenomena of multilayer metallic slits.
出处
《中国科学：物理学、力学、天文学》
CSCD
北大核心
2015年第2期16-22,共7页
Scientia Sinica Physica,Mechanica & Astronomica
基金
国家自然科学基金(批准号:11004160)
中央高校基本科研业务费专项基金(编号:GK201303007)资助项目
关键词
光学异常透射
金属狭缝
表面等离极化激元
extraordinary optical transmission, metallic slits, surface plasmon polaritons
