Title :
Extraordinary transmission through high accuracy one dimensional periodic structures
Author :
Pradarutti, B. ; Torosyan, G. ; Beigang, R. ; Kawase, K.
Author_Institution :
Fraunhofer Inst. IOF, Jena, Germany
Abstract :
We report on the extraordinary transmission through two different one dimensional periodic metallic structures in the terahertz frequency range. The first structure made by fs-lasers with submicron precision has trapezoidal unit cells whereas the second structure consists of circular metallic rods in a row. Localized plasmons lead to highly enhanced transmission at frequencies higher than an effective plasma frequency while surface plasmons give minima in the transmission spectra. The observed Fano profiles are described analytically.
Keywords :
light transmission; periodic structures; surface emitting lasers; surface plasmons; 1D periodic structures; Fano profiles; circular metallic rods; extraordinary transmission; fs-lasers; localized plasmons; periodic metallic structures; plasma frequency; surface plasmons; terahertz frequency range; transmission spectra; trapezoidal unit cells; Frequency; Laser excitation; Optical propagation; Optical pulse generation; Periodic structures; Plasmons; Resonance; Shape; Structural rods; Surface emitting lasers;
Conference_Titel :
Infrared and Millimeter Waves and 13th International Conference on Terahertz Electronics, 2005. IRMMW-THz 2005. The Joint 30th International Conference on
Print_ISBN :
0-7803-9348-1
DOI :
10.1109/ICIMW.2005.1572485
