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Rapid scanning cavity ring-down spectroscopy at the quantum noise limit

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Abstract

We present an ultrasensitive cavity-enhanced technique for probing weak molecular absorptions. Recently, we have implemented heterodyne detection, which allowed for quantum-noise-limited detection and noise-equivalent absorption coefficients as low as 6×10−14 cm−1•Hz−1/2.

© 2014 Optical Society of America

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Poster Presentation

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