期刊论文

Wang, Xin-Lin(wxl_ly000@aliyun.com)

中文

光子学报

1004-4213

2015

44

11

1131002

10.3788/gzxb20154411.1131002

国家自然科学基金项目（No.11174119） 南华大学重点学科建设项目（No.NHXK04）资助

本校为第一且通讯机构

采用三维时域有限差分方法,对比研究了石英基底上周期性亚波长圆形、纽扣形、半圆形和太极形四种具有不同对称性的孔阵列微结构金属膜的增强光透射特性,并分别探讨了阵列周期、小孔尺寸对这四种阵列结构透射特性的影响.结果表明增强光透射特性对单元结构对称性具有很强的依赖性：在超短高斯光脉冲激励下,随着单元结构对称性的降低,归一化透过率逐渐增大,红外波段的透射峰发生大量红移,且其与可见光波段的透射峰之间的距离逐渐增大,在对称性破缺的太极形孔阵列中两峰间距最大,可达1 300 nm左右.表面等离激元模式与局域表面等离子体共振模式在增强光透射现象中起着重要的作用.在可见光波段,表面等...

3D finite-difference time-domain method was employed to comparatively study the enhanced optical transmission of four kinds of periodic subwavelength hole arrays metallic films, such as circular-shaped, button-shaped, semicircular-shaped and Tai-Chi-shaped holes which had different symmetries and were deposited on a quartz substrate. The effect of the hole arrays periodicity and the hole size on the enhanced optical transmission of these four array structures were investigated. The results show that the enhanced optical transmission is strongly...