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Detection of Benzene Vapor at the ppb-level using a Difference-Frequency Generation-based Laser Instrument Operating in the 3 µm Region

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Abstract

We report on the development of a field deployable compact laser instrument based on difference frequency generation source operating in the 3–3.6 µm spectral region for trace gas detection of chemical species at the ppb-level. Measurements of benzene vapor concentration have been performed with a minimum detectable concentration of 155 ppb (3σ).

© 2008 Optical Society of America

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