Two species-one wavelength detection based on selective optical saturation spectroscopy.

ABSTRACT: Cross-sensitivity limits accurate quantitative detection of species concentrations in all sensor technologies, including laser-based absorption techniques. Absorption sensors capture a signal that combines contributions from all interfering species at a given detection wavelength. Careful selection of the probed spectral line, broadband detection, or upstream separation can partially mitigate cross-sensitivity, however, weak or unidentified signal interference remains a challenge for accuracy. Here, we present a proof-of-principle study to overcome cross-sensitivity by taking advantage of the distinct optical saturation characteristics of different gas mixture components. By controlling the absorption contribution of a selected species by intentional optical saturation, simultaneous and qu

SUBMITTER: Sadiek I 

PROVIDER: S-EPMC10564745 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature