Abstract

We report experimental results from a flow-through integrating cavity absorption meter. The operating range of the device is from 0.004m1 to over 80m1 of absorption. Absorption coefficients have been measured with 8% or less change in the presence of over 200m1 of scattering in the medium. The instrument signal has been shown to be independent of flow rate up to 20  liters/min and thus independent of turbulence. This large operational range along with the ability to measure absorption independently of adverse scattering affects allows the instrument to be utilized in a wide range of environmental conditions.

© 2009 Optical Society of America

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