Coupling Length of Metal/Si Surface Plasmons in a Metal/Insulator/Si Structure Perforated with Periodic Square Hole Arrays

Author

Tzu-Hung Chuang ; Tsai, Ming-Wei ; Chang, Yi-Tsung ; Lee, Si-Chen

Author_Institution

Department of Electrical Engineering, Graduate Institute of Electronics Engineering, National Taiwan University, Taipei, Taiwan, R.O.C., E-mail: r93943064@ntu.edu.tw

Volume

2

fYear

2006

fDate

17-20 June 2006

Firstpage

752

Lastpage

754

Abstract

The zero-order transmission of radiation through a metal/dielectric structure perforated with square hole arrays is strongly enhanced when incident light resonates with surface plasmons (SPs). Surprisingly, when a metal/dielectric double layer, such as Ag/SiO2, is fabricated on a silicon substrate, the Ag/Si SP mode by coupling Ag and Si across the intermediate dielectric film has been found. The transmission intensity is investigated as a function of the intermediate SiO2thickness. The coupling lengths between Ag and Si in order to form the Ag/Si SP mode are determined as well.

Keywords

extraordinary transmission; silver thin film; surface plasmon; Dielectric substrates; Insulation; Lattices; Metal-insulator structures; Optical arrays; Optical films; Optical surface waves; Periodic structures; Plasmons; Silicon; extraordinary transmission; silver thin film; surface plasmon;

fLanguage

English

Publisher

ieee

Conference_Titel

Nanotechnology, 2006. IEEE-NANO 2006. Sixth IEEE Conference on

Print_ISBN

1-4244-0077-5

Type

conf

DOI

10.1109/NANO.2006.247765

Filename

1717215