2-D Terahertz Metallic Photonic Crystals in Parallel-Plate Waveguides

Author

Zhao, Yuguang ; Grischkowsky, Daniel R.

Author_Institution

Sch. of Electr. & Comput. Eng., Oklahoma State Univ., Stillwater, OK

Volume

55

Issue

4

fYear

2007

fDate

4/1/2007 12:00:00 AM

Firstpage

656

Lastpage

663

Abstract

2-D metallic photonic crystals without defects, with point defects, and with a Fabry-Perot (F-P) defect are characterized by terahertz time-domain spectroscopy. The metal parallel-plate waveguide (PPWG) with single TEM-mode propagation is used as a tool to simulate 2-D photonic crystals in free space. The 2-D metallic photonic-crystal structures were fabricated by coating Au on an SU-8 polymer cylinder array. Wide terahertz bandgaps were observed in the photonic crystals within the PPWG. The experimental measurements have excellent agreement to 2-D photonic-crystal theory without defects. Defect modes are observed in the samples with defects and show the F-P defect has a strong localization effect

Keywords

parallel plate waveguides; photonic crystals; point defects; submillimetre wave spectra; time-domain analysis; 2D terahertz metallic photonic crystals; Fabry-Perot defect; SU-8 polymer cylinder array; TEM-mode propagation; defect modes; localization effect; metal parallel-plate waveguide; parallel-plate waveguides; point defects; submillimeter-wave spectroscopy; terahertz time-domain spectroscopy; wide terahertz bandgaps; Dielectrics; Engine cylinders; Frequency; Lattices; Microwave antenna arrays; Optical waveguides; Photonic band gap; Photonic crystals; Spectroscopy; Time domain analysis; Photonic crystals; submillimeter-wave spectroscopy; terahertz; waveguides;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/TMTT.2007.892798

Filename

4148129