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  1. No Access

    Article

    Mode-hop compensation for intracavity sensing via chip voltage in an external-cavity QCL

    In this paper, we describe a technique to perform intracavity gas sensing by detecting changes in the QCL voltage. The influence of mode-hops is compensated by a data acquisition and processing based on a dual...

    Laurent Bizet, Raphael Vallon, Bertrand Parvitte, Gregory Maisons… in Applied Physics B (2022)

  2. No Access

    Article

    Multi-gas sensing with quantum cascade laser array in the mid-infrared region

    Wide tunable lasers sources are useful for spectroscopy of complex molecules that have broad absorption spectra and for multiple sensing of smaller molecules. A region of interest is the mid-infrared region, w...

    Laurent Bizet, Raphael Vallon, Bertrand Parvitte, Mickael Brun… in Applied Physics B (2017)

  3. No Access

    Article

    Optimization and complete characterization of a photoacoustic gas detector

    We report the complete designing process and realization of a photoacoustic spectrometer. In a first step, the cell design is optimized in order to achieve maximum cell constant and working frequency using a f...

    Christophe Risser, Bertrand Parvitte, Raphael Vallon… in Applied Physics B (2015)

  4. No Access

    Article

    Quantitative simulation of photoacoustic signals using finite element modelling software

    This paper aims to demonstrate the quantitative simulation of photoacoustic signals using finite element modelling software. The software Comsol Multiphysics is used to calculate the response of a differential...

    Bertrand Parvitte, Christophe Risser, Raphael Vallon… in Applied Physics B (2013)