A high-resolution, wavelength-scanning, fast-data-acquisition THz-wave spectrometer for trace gases

Author

Guo, Ruixiang ; Akiyama, Koichi ; Minamide, Hiroaki ; Ito, Hiromasa

Author_Institution

RIKEN Sendai, Sendai

fYear

2006

fDate

18-22 Sept. 2006

Firstpage

155

Lastpage

155

Abstract

A compact, tabletop, high-resolution THz-wave spectrometer for trace gases was developed based on an injection-seeded THz-wave parametric generator. The chambers were purged with pure nitrogen gas to avoid strong absorption of THz-wave by water vapor. THz-wave spectra were measured over the wide frequency range of 0.8 to 2.4 THz with a resolution better than 100 MHz. Monitoring of sub-ppm H₂O concentrations in real time was demonstrated.

Keywords

data acquisition; gas sensors; microwave parametric devices; nitrogen; submillimetre wave generation; submillimetre wave spectroscopy; water; H₂O; H₂O concentrations; N; THz-wave spectra; fast-data-acquisition THz-wave spectrometer; frequency 0.8 THz to 2.4 THz; injection-seeded THz-wave parametric generator; nitrogen gas; trace gases; Absorption; Crystals; Frequency measurement; Gases; Indium tin oxide; Monitoring; Nitrogen; Radiation detectors; Spectroscopy; Wavelength measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared Millimeter Waves and 14th International Conference on Teraherz Electronics, 2006. IRMMW-THz 2006. Joint 31st International Conference on

Conference_Location

Shanghai

Print_ISBN

1-4244-0400-2

Electronic_ISBN

1-4244-0400-2

Type

conf

DOI

10.1109/ICIMW.2006.368363

Filename

4222097