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Fiberoptic Evanescent Wave Spectroscopy in Water at ppm Sensitivity with a tunable Quantum Cascade Laser

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Abstract

We present in water chemical spectroscopy by the use of a AgClBr fiber and a tunable mid-IR Quantum Cascade Laser source (QCL. We show detection of ppm concentration of ethanol in water.

© 2015 Optical Society of America

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