Application of pulsed quantum cascade lasers to NO monitoring in industrial exhaust gases

Author

Kosterev, Anatoliv A. ; Roller, Chad ; Tittel, Frank K.

Author_Institution

Dept. of Electr. & Comput. Eng., Rice Univ., Houston, TX, USA

Volume

1

fYear

2003

fDate

22-24 Oct. 2003

Firstpage

673

Abstract

Development of a pulsed quantum cascade laser (QCL) based spectroscopic gas sensor for detection of nitric oxide and other molecular species (NH₃, H₂O, and CO₂) in industrial combustion exhaust systems are reported. A fast modulation approach similar to the method used with near-IR diode lasers´ to minimize the influence of fluctuating nonselective absorption was adapted to pulsed QCLs. A method of a few pulses long wavelength scans with absorption probing at precisely selected optical frequencies was implemented. A high-temperature gas cell was used for laboratory testing of the NO sensor performance.

Keywords

exhaust systems; gas sensors; industrial pollution; quantum dot lasers; NO monitoring; absorption probing; fast modulation approach; high-temperature gas cell; industrial combustion exhaust systems; industrial exhaust gases; laboratory testing; molecular species; nitric oxide detection; nonselective absorption; pulsed quantum cascade lasers; spectroscopic gas sensor; Absorption; Combustion; Gas detectors; Gas industry; Gases; Monitoring; Optical pulses; Pulse modulation; Quantum cascade lasers; Spectroscopy;

fLanguage

English

Publisher

ieee

Conference_Titel

Sensors, 2003. Proceedings of IEEE

Print_ISBN

0-7803-8133-5

Type

conf

DOI

10.1109/ICSENS.2003.1279023

Filename

1279023