Long-term stability in continuous wave cavity ringdown spectroscopy experiments.

Abstract

Allan variance has been used to characterize the slow drift of a near-IR distributed feedback laser-based continuous wave cavity ringdown spectroscopy (CW-CRDS) system. Long-term drift in the cavity loss rate, highly correlated with changes in ambient pressure but not temperature, is observed. With differential measurement of on- and off-peak decay rates… (More)
DOI: 10.1364/AO.49.001378

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