Dual-Mode Terahertz Time-Domain Spectroscopy System

Author

Ung, Benjamin S-Y ; Jining Li ; Hungyen Lin ; Fischer, B.M. ; Withayachumnankul, Withawat ; Abbott, Derek

Author_Institution

Sch. of Electr. & Electron. Eng., Univ. of Adelaide, Adelaide, SA, Australia

Volume

3

Issue

2

fYear

2013

fDate

Mar-13

Firstpage

216

Lastpage

220

Abstract

Terahertz time-domain spectroscopy (THz-TDS) systems traditionally operate in a single mode, either in reflection or transmission. In cases where the sample has nonunity permeability, measurements in both reflection and transmission geometries are required. The process of shifting and swapping the samples during an experiment increases the measurement uncertainty. This paper therefore presents a system where both reflection and transmission measurements can be performed simultaneously to reduce both experimental error and acquisition time. The measurement results are validated against findings in literature.

Keywords

measurement uncertainty; permeability; terahertz spectroscopy; time-domain analysis; THz-TDS systems; dual-mode terahertz time-domain spectroscopy system; measurement uncertainty; nonunity permeability; reflection geometries; reflection measurements; single mode operation; transmission geometries; transmission measurements; Measurement by laser beam; Measurement uncertainty; Mirrors; Silicon; Spectroscopy; Reflection spectroscopy; terahertz; terahertz time-domain spectroscopy (THz-TDS); transmission spectroscopy;

fLanguage

English

Journal_Title

Terahertz Science and Technology, IEEE Transactions on

Publisher

ieee

ISSN

2156-342X

Type

jour

DOI

10.1109/TTHZ.2013.2241427

Filename

6466423