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Shot-Noise Limited Sensitive Detection of OH Radicals by Faraday Rotation Spectroscopy at 2.8 µm

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Abstract

We report on the development of a Faraday rotation spectroscopy instrument using a DFB diode laser operating at 2.8 µm for the hydroxyl (OH) radical detection with a 1σ detection limit of 8.2×108 OH radicals/cm3.

© 2011 Optical Society of America

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