Extraordinary optical transmission through a subwavelength composite hole-pillar array

被引：0
|
作者：
邵伟佳 [1 ,2 ]
李为民 [1 ]
许小亮 [2 ]
王会杰 [2 ]
吴以治 [2 ]
郁菁 [2 ]
机构：
[1] National Synchrotron Radiation Laboratory and School of Nuclear Science and Technology,University of Science and Technology of China
[2] Department of Physics, University of Science and Technology of China
来源：
Chinese Physics B | 2014年 / 11期
基金：
中国国家自然科学基金;
关键词：
surface plasmon polariton resonance(SPPR); transmission; optical filter;
D O I：
暂无
中图分类号：
O53 [等离子体物理学];
学科分类号：
070204 ;
摘要：
We numerically investigate the transmission properties of a subwavelength composite hole-pillar array. As the radius of the pillar increases, the transmission properties experience a complex evolution. It is found that the magnetic dipole resonance of the pillar suppresses the surface plasmon polariton resonance(SPPR) at the gold-air interface. There are two strong transmission peaks associated with the magnetic dipole resonance of pillar and SPPR at the gold-silica interface. A peak associated with magnetic quadrupole resonance of the pillar is observed. Moreover, there is a weak peak associated with the coupling between the whispering-gallery plasmon(WGP) mode and magnetic dipole. Our work is helpful for making a dual band optical filter.
引用
收藏
页码：487 / 492
页数：6
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