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PubMed · 12143896

Absorption spectroscopy with quantum cascade lasers.

A A Kosterev·R F Curl·F K Tittel·C Gmachl·F Capasso·D L Sivco·J N Baillargeon·A L Hutchinson·A Y Cho
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Abstract

Novel pulsed and cw quantum cascade distributed feedback (QC-DFB) lasers operating near lambda=8 micrometers were used for detection and quantification of trace gases in ambient air by means of sensitive absorption spectroscopy. N2O, 12CH4, 13CH4, and different isotopic species of H2O were detected. Also, a highly selective detection of ethanol vapor in air with a sensitivity of 125 parts per billion by volume (ppb) was demonstrated.

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Air Pollution, IndoorEnvironmental MonitoringEquipment DesignEthanolEvaluation Studies as TopicGasesLasersMethaneNitrous OxideQuantum TheorySpectrophotometry, AtomicTemperatureWaterNASA Discipline Life Sciences TechnologiesNon-NASA CenterJournal ArticleResearch Support, Non-U.S. Gov'tResearch Support, U.S. Gov't, Non-P.H.S.

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A A Kosterev, R F Curl, F K Tittel, C Gmachl, F Capasso, D L Sivco, J N Baillargeon, A L Hutchinson, A Y Cho. 2001. Absorption spectroscopy with quantum cascade lasers.. https://pubmed.ncbi.nlm.nih.gov/12143896/

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