A compact CW-THz spectrometer for applications to gas phase identification and quantification of multiple species

Author

Hindle, Francis ; Yang, Chun ; Cuisset, Arnaud ; Bocquet, Robin ; Mouret, Gael

Author_Institution

Lab. de Physico-Chimie de I´Atmos., Univ. du Littoral Cote d´Opale, Dunkerque

fYear

2007

fDate

2-9 Sept. 2007

Firstpage

226

Lastpage

227

Abstract

A CW-THz spectrometer using photomixing has been constructed using two external cavity diode lasers and a tapered semiconductor optical amplifier. One diode laser is stabilized to atomic transition of Rubidium and the second is stabilized with a terahertz beatnote separation by means of a low contrast Fabry-Perot interferometer. The line intensity and self broadening coefficient of carbonyl sulphide was determined to validate the spectrometer performance.

Keywords

Fabry-Perot interferometers; rubidium; semiconductor lasers; submillimetre wave spectroscopy; Fabry-Perot interferometer; carbonyl sulphide; cavity diode laser; compact CW-THz spectrometer; gas phase identification; photomixing; rubidium; tapered semiconductor optical amplifier; Diode lasers; Frequency; Gas lasers; Laser stability; Millimeter wave measurements; Optical collimators; Optical mixing; Pollution measurement; Semiconductor optical amplifiers; Spectroscopy; millimeter wave frequency conversion; millimeter wave spectroscopy; semiconductor lasers;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared and Millimeter Waves, 2007 and the 2007 15th International Conference on Terahertz Electronics. IRMMW-THz. Joint 32nd International Conference on

Conference_Location

Cardiff

Print_ISBN

978-1-4244-1438-3

Type

conf

DOI

10.1109/ICIMW.2007.4516472

Filename

4516472