Terahertz goubau waveguides with integrated photoconductive emitters and mode discriminating detectors

Author

Dazhang, L. ; Cunningham, J. ; Byrne, M.B. ; Khanna, S.P. ; Wood, C.D. ; Burnett, A.D. ; Linfield, E.H. ; Davies, A.G.

Author_Institution

Sch. of Electron. & Electr. Eng., Univ. of Leeds, Leeds, UK

fYear

2009

fDate

21-25 Sept. 2009

Firstpage

1

Lastpage

2

Abstract

We have measured the picosecond-timescale response of Goubau-line waveguides integrated with regions of low-temperature-grown gallium arsenide, which act as both pulsed photoconductive emitters and detectors. We demonstrate, using two pairs of excitation / detection switches, detection of the radial propagation mode of the Goubau-line, with signal components extending above 800 GHz. This waveguide geometry offers advantages compared to microstrip or coplanar-line geometries for on-chip guiding of terahertz radiation.

Keywords

terahertz waves; waveguides; Goubau-line waveguides; mode discriminating detectors; on-chip guidance; picosecond-timescale response; pulsed photoconductive emitters; radial propagation mode; terahertz Goubau waveguides; terahertz radiation; waveguide geometry; Conductors; Coplanar waveguides; Detectors; Frequency; Geometry; Microstrip; Photoconductivity; Semiconductor waveguides; Surface waves; Switches;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared, Millimeter, and Terahertz Waves, 2009. IRMMW-THz 2009. 34th International Conference on

Conference_Location

Busan

Print_ISBN

978-1-4244-5416-7

Electronic_ISBN

978-1-4244-5417-4

Type

conf

DOI

10.1109/ICIMW.2009.5324638

Filename

5324638