Title :
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
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;
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
DOI :
10.1109/ICIMW.2009.5324638
