Extraordinary transmission through Ag-Si structure perforated with rhombus lattice hole arrays
Journal
IEEE Photonics Technology Letters
Journal Volume
22
Journal Issue
20
Pages
1482-1484
Date Issued
2010
Author(s)
Wu, Y.-T.
Chang, Y.-T.
Jiang, Y.-W.
Chang, P.-E.
Ye, Y.-H.
Tzuang, D.-C.
Chen, H.-H.
Huang, H.-F.
Abstract
This investigation elucidates the transmission characteristics of an Ag-Si structure on which an Ag film is perforated with a rhombus-shape of lattice holes. The transmission in the Ag-Si mode depends approximately linearly on the numbers of degenerate modes at long wavelengths at which the couplings between Ag-Si and Ag-air modes are weak. At the shorter wavelengths where Ag-Si and Ag-air modes are coupled together, the transmission intensities are approximately constant without an apparent peak at wavelengths longer than those of the Ag-air modes. The intensities decay rapidly at lower wavelengths owing the asymmetric slope of the Ag-air mode in the spectra.
SDGs
Type
journal article