Ma, YufeiHe, YingYu, XinZhang, JingboSun, RuiTittel, Frank K.2017-05-092017-05-092016Ma, Yufei, He, Ying, Yu, Xin, et al.. "Compact all-fiber quartz-enhanced photoacoustic spectroscopy sensor with a 30.72 kHz quartz tuning fork and spatially resolved trace gas detection." <i>Applied Physics Letters,</i> 108, no. 9 (2016) AIP Publishing LLC: http://dx.doi.org/10.1063/1.4943233.https://hdl.handle.net/1911/94219An ultra compact all-fiber quartz-enhanced photoacoustic spectroscopy (QEPAS) sensor using quartz tuning fork (QTF) with a low resonance frequency of 30.72 kHz was demonstrated. Such a sensor architecture has the advantages of easier optical alignment, lower insertion loss, lower cost, and more compact compared with a conventional QEPAS sensor using discrete optical components for laser delivery and coupling to the QTF. A fiber beam splitter and three QTFs were employed to perform multi-point detection and demonstrated the potential of spatially resolved measurements.engArticle 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.Journal articlehttp://dx.doi.org/10.1063/1.4943233