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Conferences > LACEA > 2000 > SaA > SaA2

Trace gas detection in ambient air using a 7.9 micron QC-DFB laser

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

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Abstract

Spectroscopic trace gas detection in the 7.9 µm spectral region with a single frequency quantum cascade distributed feedback (QC-DFB) laser was demonstrated. A 100-m multipass cell and a “zero-air” background subtraction technique were used to enhance the detection sensitivity.

© 2000 Optical Society of America

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