Fabrication and characterization of THz plasmonic filter

Author

Wu, Dongmin ; Fang, Nicholas ; Sun, Cheng ; Zhang, Xiang ; Padilla, Willie ; Basov, Dmitri ; Smith, David

Author_Institution

Dept. of Mech. & Aerosp. Eng., California Univ., Los Angeles, CA, USA

fYear

2002

fDate

2002

Firstpage

229

Lastpage

231

Abstract

Terahertz imaging systems have applications for explosives detection, aircraft guidance and landing in zero-visibility weather condition, as well as terrestrial and astronomical remote sensing. These critical applications need a variety of optical elements in the THz frequency, which has yet to be explored. In this paper, we demonstrate a high pass THz filter which utilizes the lowered plasma frequency of thin metal wire structures. The microstereolithography technique is applied to fabricate the 2D lattice of thin metal cylinders. The reflection property of the filter is characterized by FTIR, and the plasma frequency is determined at 0.7 THz, which agrees with the approximate theory.

Keywords

Fourier transform spectra; high-pass filters; infrared spectra; lithography; micromachining; optical fabrication; plasmons; submillimetre wave filters; 0.7 THz; FTIR; THz plasmonic filter; aircraft guidance-anding; approximate theory; explosives detection; high pass THz filter; microstereolithography technique; optical elements; plasma frequency; remote sensing; terahertz imaging; thin metal cylinder 2D lattice; thin metal wire structures; Aircraft; Explosives; Frequency; Optical device fabrication; Optical filters; Optical imaging; Plasma properties; Plasmons; Remote sensing; Submillimeter wave filters;

fLanguage

English

Publisher

ieee

Conference_Titel

Nanotechnology, 2002. IEEE-NANO 2002. Proceedings of the 2002 2nd IEEE Conference on

Print_ISBN

0-7803-7538-6

Type

conf

DOI

10.1109/NANO.2002.1032234

Filename

1032234