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

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dc.citation.firstpage25943en_US
dc.citation.issueNumber23en_US
dc.citation.journalTitleOptics Expressen_US
dc.citation.lastpage25954en_US
dc.citation.volumeNumber24en_US
dc.contributor.authorPatimisco, Pietroen_US
dc.contributor.authorSampaolo, Angeloen_US
dc.contributor.authorBidaux, Yvesen_US
dc.contributor.authorBismuto, Alfredoen_US
dc.contributor.authorScott, Marshallen_US
dc.contributor.authorJiang, Jamesen_US
dc.contributor.authorMuller, Antoineen_US
dc.contributor.authorFaist, Jeromeen_US
dc.contributor.authorTittel, Frank K.en_US
dc.contributor.authorSpagnolo, Vincenzoen_US
dc.date.accessioned2016-12-16T17:50:26Zen_US
dc.date.available2016-12-16T17:50:26Zen_US
dc.date.issued2016en_US
dc.description.abstractWe 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.en_US
dc.identifier.citationPatimisco, Pietro, Sampaolo, Angelo, Bidaux, Yves, et al.. "Purely wavelength- and amplitude-modulated quartz-enhanced photoacoustic spectroscopy." <i>Optics Express,</i> 24, no. 23 (2016) The Optical Society: 25943-25954. http://dx.doi.org/10.1364/OE.24.025943.en_US
dc.identifier.doihttp://dx.doi.org/10.1364/OE.24.025943en_US
dc.identifier.urihttps://hdl.handle.net/1911/93723en_US
dc.language.isoengen_US
dc.publisherThe Optical Societyen_US
dc.rightsArticle 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.en_US
dc.titlePurely wavelength- and amplitude-modulated quartz-enhanced photoacoustic spectroscopyen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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