Absorption spectroscopy with quantum cascade lasers

Kosterev, A. A.; Curl, R. F.; Tittel, F. K.; Gmachl, C.; Capasso, F.; Sivco, D. L.; Baillargeon, J. N.; Hutchinson, A. L.; Cho, A. Y.

NASA NTRS · 20040088202

Absorption spectroscopy with quantum cascade lasers

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

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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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NASA Discipline Life Sciences Technologies Non-NASA Center Environmental Monitoring/instrumentation/methods Air Pollution, Indoor/analysis Lasers Spectrophotometry, Atomic/instrumentation Quantum Theory Nitrous Oxide/analysis Ethanol/analysis Temperature Water/analysis Evaluation Studies Methane/analysis Support, U.S. Gov't, Non-P.H.S Equipment Design Gases/analysis Support, Non-U.S. Gov't

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Kosterev, A. A., Curl, R. F., Tittel, F. K., Gmachl, C., Capasso, F., Sivco, D. L., Baillargeon, J. N., Hutchinson, A. L., Cho, A. Y.. 2001-01-01. Absorption spectroscopy with quantum cascade lasers. https://ntrs.nasa.gov/citations/20040088202

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