Highly sensitive acetylene detection based on multi-pass retro-reflection-cavity-enhanced photoacoustic spectroscopy and a fiber amplified diode laser

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dc.citation.firstpage14163
dc.citation.issueNumber10
dc.citation.journalTitleOptics Express
dc.citation.lastpage14172
dc.citation.volumeNumber27
dc.contributor.authorMa, Yufei
dc.contributor.authorQiao, Shunda
dc.contributor.authorHe, Ying
dc.contributor.authorLi, Yu
dc.contributor.authorZhang, Zhonghua
dc.contributor.authorYu, Xin
dc.contributor.authorTittel, Frank K.
dc.date.accessioned2019-12-12T17:25:32Z
dc.date.available2019-12-12T17:25:32Z
dc.date.issued2019
dc.description.abstractIn this paper, a multi-pass retro-reflection-cavity-enhanced photoacoustic spectroscopy (PAS) based gas sensor is reported for the first time. The multi-pass retro-reflection-cavity consisted of two right-angle prisms and was designed to reflect the laser beam to pass through the photoacoustic (PA) cell four times, which improved the acetylene (C2H2)-PAS sensor signal level significantly. The optical power of a near-infrared distributed feedback (DFB) diode laser emitting a continuous wave (CW) was amplified to 1000 mW with an erbium-doped fiber amplifier. The background noise was reduced with wavelength modulation spectroscopy (WMS) and 2nd harmonic demodulation techniques. The linear optical power and concentration response of such a PAS sensor were investigated, and the experimental results showed excellent characteristics. When the integration the time of the sensor system was set to 1 s, the minimum detection limit (MDL) for C2H2 detection was 8.17 ppb, which corresponds to a normalized noise equivalent absorption coefficient (NNEA) of 1.84 × 10−8 cm−1W/√Hz. The long-term stability of such a multi-pass retro-reflection-cavity-enhanced PAS based C2H2 sensor was evaluated by an Allan deviation analysis. It was demonstrated that the multi-pass retro-reflection-cavity-enhanced PAS sensor had an excellent stability. An MDL of 600 ppt was achieved when the integration time was set to ~1000 s. It was verified that the method of multi-pass retro-reflection-cavity-enhanced PAS with an amplified laser source improved the sensor performance significantly. If an appropriate cavity design with increasing reflection times is used, the MDL of such a PAS-based sensor can be further improved.
dc.identifier.citationMa, Yufei, Qiao, Shunda, He, Ying, et al.. "Highly sensitive acetylene detection based on multi-pass retro-reflection-cavity-enhanced photoacoustic spectroscopy and a fiber amplified diode laser." <i>Optics Express,</i> 27, no. 10 (2019) Optical Society of America: 14163-14172. https://doi.org/10.1364/OE.27.014163.
dc.identifier.digitaloe-27-10-14163
dc.identifier.doihttps://doi.org/10.1364/OE.27.014163
dc.identifier.urihttps://hdl.handle.net/1911/107878
dc.language.isoeng
dc.publisherOptical Society of America
dc.rights© 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
dc.rights.urihttps://www.osapublishing.org/library/license_v1.cfm#VOR-OA
dc.titleHighly sensitive acetylene detection based on multi-pass retro-reflection-cavity-enhanced photoacoustic spectroscopy and a fiber amplified diode laser
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpublisher version
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