Title :
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
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;
Conference_Titel :
Nanotechnology, 2006. IEEE-NANO 2006. Sixth IEEE Conference on
Print_ISBN :
1-4244-0077-5
DOI :
10.1109/NANO.2006.247765
