Finite size effect of transmission property for metal hole arrays in subterahertz region
- 12 April 2004
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 84 (15) , 2742-2744
- https://doi.org/10.1063/1.1702125
Abstract
The mechanism of the high band-pass transmission property of metal hole arrays (MHA), which is metal slabs perforated periodically with circular holes, in the subterahertz (sub-THz) wave region has been investigated. We measured the transmission spectra varying the number of holes using a THz time domain spectroscopy and observed that the peak transmittance normalized by the porosity of holes increases with increasing the number of holes. This finite size effect of the transmission characteristics of the MHA is attributed to the increase of the coupling efficiency between the incident THz wave and the surface mode excited on the MHA surface with increasing the number of holes.Keywords
This publication has 10 references indexed in Scilit:
- Large polarization change in two-dimensional metallic photonic crystals in subterahertz regionApplied Physics Letters, 2003
- Beaming Light from a Subwavelength ApertureScience, 2002
- Temperature dependence of optical and electronic properties of moderately doped silicon at terahertz frequenciesJournal of Applied Physics, 2001
- Theory of Extraordinary Optical Transmission through Subwavelength Hole ArraysPhysical Review Letters, 2001
- Characterization and application of dichroic filters in the 0.1-3-THz regionIEEE Transactions on Microwave Theory and Techniques, 2000
- Surface-plasmon-enhanced transmission through hole arrays in Cr filmsJournal of the Optical Society of America B, 1999
- Transmission characteristics of dichroic filters measured by THz time-domain spectroscopyApplied Physics A, 1998
- Extraordinary optical transmission through sub-wavelength hole arraysNature, 1998
- Photonic gaps in the dispersion of surface plasmons on gratingsPhysical Review B, 1995
- Theory of Diffraction by Small HolesPhysical Review B, 1944