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Conferences > LACEA > 2000 > SaA > SaA4

Application of Balanced Detection to Absorption Measurements with Quasi-cw QC Lasers

D. Sonnenfroh, E. Wetjen, M. Miller, M. Allen, Claire Gmachl, Federico Capasso, Albert L. Hutchinson, Deborah L. Sivco, James N. Baillargeon, and Alfred Y. Cho

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Abstract

We have demonstrated direct absorption measurements of NO at 5.4 µm using QC lasers in combination with a balanced detection technique. Peak absorptions of 100 ppm have been measured with excellent signal-to-noise ratio.

© 2000 Optical Society of America

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