Mid-infrared quantum cascade laser based trace gas sensor technologies: Recent advances and applications

Author

Tittel, Frank K. ; Dong, Lei ; Lewicki, R. ; Liu, K. ; Gong, L. ; Griffin, R. ; Spagnolo, V.

Author_Institution

ECE Dept., Rice Univ., Houston, TX, USA

fYear

2011

fDate

2-7 Oct. 2011

Firstpage

1

Lastpage

3

Abstract

Recent advances in the development of trace gas sensors based on the use of quantum cascade lasers (QCLs) for the sensitive, selective detection, quantification and monitoring of small molecular gas species with resolved spectroscopic features will be described. High detection sensitivity at ppbv and sub-ppbv concentration levels requires detection sensitivity, enhancement schemes such as multipass absorption cells, cavity enhanced absorption techniques, or quartz enhanced photo-acoustic absorption spectroscopy (QEPAS).

Keywords

gas sensors; photoacoustic effect; quantum cascade lasers; cavity enhanced absorption; enhancement scheme; high detection sensitivity; midinfrared quantum cascade laser; monitoring; multipass absorption cell; quartz enhanced photoacoustic absorption spectroscopy; selective detection; small molecular gas species; sub-ppbv concentration level; trace gas sensor; Absorption; Atmospheric measurements; Gas detectors; Humans; Monitoring; Quantum cascade lasers; Spectroscopy;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared, Millimeter and Terahertz Waves (IRMMW-THz), 2011 36th International Conference on

Conference_Location

Houston, TX

ISSN

2162-2027

Print_ISBN

978-1-4577-0510-6

Electronic_ISBN

2162-2027

Type

conf

DOI

10.1109/irmmw-THz.2011.6104813

Filename

6104813