Tunable Diode Laser Absorption Spectroscopy based Oxygen Sensor

Author

Verma, Rajesh ; Neethu, S. ; Kamble, S.S. ; Radhakrishnan, J.K. ; Krishnapur, P.P. ; Padki, V.C.

Author_Institution

Dept. of Life Support Syst., Defence R&D Organ. (DRDO), Bangalore, India

fYear

2012

fDate

18-21 Dec. 2012

Firstpage

130

Lastpage

135

Abstract

Tunable Diode Laser Absorption Spectroscopy (TDLAS) based gas sensing technology is a futuristic technology that has wide application in aerospace industry. In this paper we present the preliminary measurements on a TDLAS based Oxygen Sensor. TDLAS bench model setup has been established to measure the 1^st and 2^nd harmonics of the absorption signal. If-normalized WMS-2 technique is used for calculation of percentage oxygen concentration. The result has been compared with the 2^nd harmonic detection technique and observed that the measured oxygen concentration coincides with the actual oxygen concentration using If-normalized WMS-2 technique.

Keywords

chemical variables measurement; gas sensors; oxygen; semiconductor lasers; 1^st harmonic detection technique; 1f-normalized WMS-2 technique; 2^nd harmonic detection technique; O; TDLAS bench model setup; absorption signal harmonics measurement; aerospace industry; gas sensing technology; oxygen sensor; percentage oxygen concentration measurement; tunable diode laser absorption spectroscopy; wavelength modulation spectroscopy; Absorption; Diode lasers; Gas lasers; Harmonic analysis; Laser modes; Modulation; Oxygen; If-normalized WMS-2 technique; TDLAS-Tunable diode laser absorption spectroscopy; WMS-wavelength modulation spectroscopy;

fLanguage

English

Publisher

ieee

Conference_Titel

Sensing Technology (ICST), 2012 Sixth International Conference on

Conference_Location

Kolkata

ISSN

2156-8065

Print_ISBN

978-1-4673-2246-1

Type

conf

DOI

10.1109/ICSensT.2012.6461655

Filename

6461655