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    Purely wavelength- and amplitude-modulated quartz-enhanced photoacoustic spectroscopy

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    Author
    Patimisco, Pietro; Sampaolo, Angelo; Bidaux, Yves; Bismuto, Alfredo; Scott, Marshall; More... Jiang, James; Muller, Antoine; Faist, Jerome; Tittel, Frank K.; Spagnolo, Vincenzo Less...
    Date
    2016
    Abstract
    We report here on a quartz-enhanced photoacoustic (QEPAS) sensor employing a quantum cascade laser (QCL) structure capable of operating in a pure amplitude or wavelength modulation configuration. The QCL structure is composed of three electrically independent sections: Gain, Phase (PS) and Master Oscillator (MO). Selective current pumping of these three sections allows obtaining laser wavelength tuning without changes in the optical power, and power modulation without emission wavelength shifts. A pure QEPAS amplitude modulation condition is obtained by modulating the PS current, while pure wavelength modulation is achieved by modulating simultaneously the MO and PS QCL sections and slowly scanning the DC current level injected in the PS section.
    Citation
    Patimisco, Pietro, Sampaolo, Angelo, Bidaux, Yves, et al.. "Purely wavelength- and amplitude-modulated quartz-enhanced photoacoustic spectroscopy." Optics Express, 24, no. 23 (2016) The Optical Society: 25943-25954. http://dx.doi.org/10.1364/OE.24.025943.
    Published Version
    http://dx.doi.org/10.1364/OE.24.025943
    Type
    Journal article
    Publisher
    The Optical Society
    Citable link to this page
    https://hdl.handle.net/1911/93723
    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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    Home | FAQ | Contact Us | Privacy Notice | Accessibility Statement
    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