Absorption spectroscopy with quantum cascade lasers

Authors
Kosterev, AA Curl, RF Tittel, FK Gmachl, C Capasso, F Sivco, DL Baillargeon, JN Hutchinson, AL Cho, AY
Citation
Aa. Kosterev et al., Absorption spectroscopy with quantum cascade lasers, LASER PHYS, 11(1), 2001, pp. 39-49
Citations number
13
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Optics & Acoustics
Journal title
LASER PHYSICS
ISSN journal
1054660X → ACNP
Volume
11
Issue
1
Year of publication
2001
Pages
39 - 49
Database
ISI
SICI code
1054-660X(200101)11:1<39:ASWQCL>2.0.ZU;2-D
Abstract
Novel pulsed and cw quantum cascade distributed feedback (QC-DFB) lasers op erating near lambda = 8 mum were used for detection and quantification of t race gases in ambient air by means of sensitive absorption spectroscopy. N2 O, (CH4)-C-12, (CH4)-C-13, and different isotopic species of H2O were detec ted. Also, a highly selective detection of ethanol vapor in air with a sens itivity of 125 parts per billion by volume (ppb) was demonstrated.