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In-situ flame measurements of NO and CO using Mid-IR QC lasers

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Abstract

Room-temperature Quantum Cascade Lasers (QCL) allow high-sensitivity measurements of trace gas absorption in the 4.6 to 11 micron wavelength region. Important combustion-generated pollutants such as CO and NO exhibit strong fundamental absorption bands in this region and sub-ppm detection limits are projected. The paper will present initial results for both species obtained in a laboratory flat flame burner.

© 2002 Optical Society of America

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