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    Pure amplitude and wavelength modulation spectroscopy for detection of N2O using a three-sections quantum cascade laser

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    Author
    Patimisco, Pietro; Sampaolo, Angelo; Bidaux, Yves; Bismuto, Alfredo; Scott, Marshall; More... Jiang, James; Tittel, Frank K.; Spagnolo, Vincenzo Less...
    Date
    2017
    Abstract
    We report on a novel quantum cascade laser (QCL) capable of operating in pure amplitude or wavelength modulation configuration thereby allowing the acquisition of background-free gas absorption-line profiles using quartz-enhanced photoacoustic spectroscopy (QEPAS). The QCL is composed of three electrically independent sections: Gain, Phase (PS) and Master Oscillator (MO). The non-uniform pumping of these three QCL sections allows laser wavelength tuning with constant optical power and vice-versa. Pure QEPAS amplitude modulation operating conditions were obtained by modulating the PS current, while pure wavelength modulation was obtained by modulating the MO section and slowly scanning the PS current.
    Citation
    Patimisco, Pietro, Sampaolo, Angelo, Bidaux, Yves, et al.. "Pure amplitude and wavelength modulation spectroscopy for detection of N2O using a three-sections quantum cascade laser." Proceedings of SPIE, 10111, (2017) SPIE: http://dx.doi.org/10.1117/12.2252352.
    Published Version
    http://dx.doi.org/10.1117/12.2252352
    Keyword
    quartz tuning fork; photoacoustic spectroscopy; quantum cascade laser; gas sensing
    Type
    Journal article
    Publisher
    SPIE
    Citable link to this page
    https://hdl.handle.net/1911/93858
    Rights
    Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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    • ECE Publications [1443]
    • Faculty Publications [4990]

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    Managed by the Digital Scholarship Services at Fondren Library, Rice University
    Physical Address: 6100 Main Street, Houston, Texas 77005
    Mailing Address: MS-44, P.O.BOX 1892, Houston, Texas 77251-1892
    Site Map