Guided surface waves in photoconductive excitation

Author

Shah, S.A. ; Zeng, A. ; Jackson, M.K. ; Pouliot, L. ; Lecours, A. ; Currie, J.F.

Author_Institution

Dept. of Electr. Eng., British Columbia Univ., Vancouver, BC, Canada

Volume

6

Issue

9

fYear

1996

fDate

9/1/1996 12:00:00 AM

Firstpage

309

Lastpage

311

Abstract

We have used electrooptic sampling to measure photoconductively generated signals on coplanar striplines. We observe a new feature in the measured signal that we attribute to photoconductively-excited surface waves. Measurements at positions laterally displaced from the center of the transmission line show that when the substrate is thin, this signal is confined to the region of the electrodes. We also show that this feature, which can interfere with accurate device characterization, can be eliminated by delaying it out of the time window of interest,

Keywords

photoconducting switches; photoconductivity; strip lines; surface electromagnetic waves; accurate device characterization; coplanar striplines; electrooptic sampling; guided surface waves; photoconductive excitation; photoconductively generated signals; photoconductively-excited surface waves; transmission line; Coplanar transmission lines; Displacement measurement; Electrodes; Photoconductivity; Position measurement; Sampling methods; Signal generators; Stripline; Surface waves; Transmission line measurements;

fLanguage

English

Journal_Title

Microwave and Guided Wave Letters, IEEE

Publisher

ieee

ISSN

1051-8207

Type

jour

DOI

10.1109/75.535828

Filename

535828