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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. Article

    Open Access

    Chaotic light at mid-infrared wavelength

    The onset of nonlinear dynamics and chaos is evidenced in a mid-infrared distributed feedback quantum cascade laser both in the temporal and frequency domains. As opposed to the commonly observed route to chao...

    Louise Jumpertz, Kevin Schires, Mathieu Carras… in Light: Science & Applications (2016)

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  4. No Access

    Article

    An FDTD approach to the simulation of quantum-well infrared photodetectors

    A Finite Difference Time Domain approach is used to design and to optimize quantum-well based infrared photodetectors. Results showing the influence of some parameters on the performance of these devices are p...

    Luca Stabellini, Wei Lu, Alfredo De Rossi, Thomas Antoni… in Optical and Quantum Electronics (2008)

  5. No Access

    Article

    Photonic Metal Bandgap Structure for Intersubband Detection

    We would like to present here a geometry of Quantum Well Infrared Photodetectors (QWIPs) for increasing the detectivity. It consists of a mesa (a squared etched pixel) with a metal grating on top of it. The grati...

    Mathieu Carras, Alfredo De Rossi in Optical and Quantum Electronics (2006)