Tailoring optical transmission via the arrangement of compound subwavelength hole arrays

Jianqiang Liu; Mengdong He; Xiang Zhai; Lingling Wang

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Tailoring optical transmission via the arrangement of compound subwavelength hole arrays

Jianqiang Liu 1,Mengdong He 2,Xiang Zhai 3,Lingling Wang 3 *

1.School of Physics and Microelectronics, Hunan University College of Science, Jiujiang University

2.Institute of Mathematics and Physics ,Central South University of Forestry and Technology

3.School of Physics and Microelectronics, Hunan University

*Correspondence author

#Submitted by

Subject:

Funding: 教育部博士点基金（No.20050532013）

Opened online:17 November 2008

Accepted by: none

Citation: Jianqiang Liu,Mengdong He,Xiang Zhai.Tailoring optical transmission via the arrangement of compound subwavelength hole arrays[OL]. [17 November 2008] http://en.paper.edu.cn/en_releasepaper/content/25769

The transmission properties of light through metal films with compound periodic subwavelength hole arrays is numerically investigated by using the finite-difference time-domain (FDTD) method. The splitting of surface plasmon resonance (SPR) (1, 1) peak, together with the suppression of SPR (0, 1) peak, is found when two square holes in every unit cell are arranged asymmetrically along the polarization direction of the incident light. However, the shape of transmission spectra is not sensitive to the symmetry if the holes are arranged perpendicular to the propagation direction of surface plasmon polaritons (SPPs). The physics origin of these phenomena is explained qualitatively by the phase resonance of SPPs. The results open a way to tailor the transmission properties of light in the metallic nanostructures.

Keywords:optical transmission;subwavelength;compound hole arrays;SPPs

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