{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,4]],"date-time":"2026-03-04T15:58:11Z","timestamp":1772639891545,"version":"3.50.1"},"reference-count":25,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2017,3,4]],"date-time":"2017-03-04T00:00:00Z","timestamp":1488585600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100000928","name":"Welch Foundation","doi-asserted-by":"publisher","award":["C-0586"],"award-info":[{"award-number":["C-0586"]}],"id":[{"id":"10.13039\/100000928","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Polish National Centre for Research and Development","award":["179616"],"award-info":[{"award-number":["179616"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>The application of compact inexpensive trace gas sensor technology to a mid-infrared nitric oxide (NO) detectoion using intracavity quartz-enhanced photoacoustic spectroscopy (I-QEPAS) is reported. A minimum detection limit of 4.8 ppbv within a 30 ms integration time was demonstrated by using a room-temperature, continuous-wave, distributed-feedback quantum cascade laser (QCL) emitting at 5.263 \u00b5m (1900.08 cm\u22121) and a new compact design of a high-finesse bow-tie optical cavity with an integrated resonant quartz tuning fork (QTF). The optimum configuration of the bow-tie cavity was simulated using custom software. Measurements were performed with a wavelength modulation scheme (WM) using a 2f detection procedure.<\/jats:p>","DOI":"10.3390\/s17030513","type":"journal-article","created":{"date-parts":[[2017,3,9]],"date-time":"2017-03-09T06:56:43Z","timestamp":1489042603000},"page":"513","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":43,"title":["Mid-Infrared Trace Gas Sensor Technology Based on Intracavity Quartz-Enhanced Photoacoustic Spectroscopy"],"prefix":"10.3390","volume":"17","author":[{"given":"Jacek","family":"Wojtas","sequence":"first","affiliation":[{"name":"Institute of Optoelectronics, Military University of Technology, 00-908 Warsaw, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Aleksander","family":"Gluszek","sequence":"additional","affiliation":[{"name":"Electronics Faculty, Wroclaw University of Science and Technology, 50-370 Wroclaw, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Arkadiusz","family":"Hudzikowski","sequence":"additional","affiliation":[{"name":"Electronics Faculty, Wroclaw University of Science and Technology, 50-370 Wroclaw, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2245-7565","authenticated-orcid":false,"given":"Frank","family":"Tittel","sequence":"additional","affiliation":[{"name":"Department of Electrical and Computer Engineering, Rice University, Houston, TX 77005-1892, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2017,3,4]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"12587","DOI":"10.1073\/pnas.0906291106","article-title":"Ultrasensitive detection of nitric oxide at 5.33 \u03bcm by using external cavity quantum cascade laser-based Faraday rotation spectroscopy","volume":"106","author":"Lewicki","year":"2009","journal-title":"Proc. Natl. Acad. Sci. USA"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"503","DOI":"10.1007\/s00340-003-1380-7","article-title":"Wavelength modulation absorption spectroscopy with 2f detection using multiplexed diode lasers for rapid temperature measurements in gaseous flows","volume":"78","author":"Liu","year":"2004","journal-title":"Appl. Phys. B"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"4145","DOI":"10.1364\/AO.38.004145","article-title":"Multiple-pass cell for very-long-path infrared spectrometry","volume":"38","author":"Ritz","year":"1999","journal-title":"Appl. Opt."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"343","DOI":"10.1007\/s00340-002-0979-4","article-title":"Sub-part-per-billion detection of nitric oxide in air using a thermoelectrically cooled mid-infrared quantum cascade laser spectrometer","volume":"75","author":"Nelson","year":"2002","journal-title":"Appl. Phys. B"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"5522","DOI":"10.1364\/AO.40.005522","article-title":"Cavity ringdown spectroscopic detection of nitric oxide with a continuous-wave quantum-cascade laser","volume":"40","author":"Kosterev","year":"2001","journal-title":"Appl. Opt."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"565","DOI":"10.1080\/014423500750040627","article-title":"Cavity ring-down spectroscopy: Experimental schemes and applications","volume":"4","author":"Berden","year":"2000","journal-title":"Int. Rev. Phys. Chem."},{"key":"ref_7","first-page":"210","article-title":"Towards optoelectronic detection of explosives","volume":"21","author":"Wojtas","year":"2013","journal-title":"Opt. Electron. Rev."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"47","DOI":"10.1007\/s00340-012-5250-z","article-title":"Cavity Enhanced Optical Feedback Assisted Photoacoustic Spectroscopy with a 10.4 microns External-Cavity Quantum Cascade Laser","volume":"110","author":"Kachanov","year":"2013","journal-title":"Appl. Phys. B"},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/S1350-4495(98)00038-3","article-title":"Design and characteristics of a differential Helmholtz resonant photoacoustic cell for infrared gas detection","volume":"40","author":"Zeninari","year":"1999","journal-title":"Infrared Phys. Technol."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"1937","DOI":"10.1063\/1.1353198","article-title":"Application of acoustic resonators in photoacoustic trace gas analysis and metrology","volume":"72","author":"Miklos","year":"2001","journal-title":"Rev. Sci. Instrum."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"715","DOI":"10.1366\/000370202760077658","article-title":"Near Infrared Diode Based Spectroscopic Detection of Ammonia: A Comparative Study of Photoacoustic and Direct Optical Absorption Methods","volume":"56","author":"Bozoki","year":"2002","journal-title":"Appl. Spectrosc."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/j.cplett.2009.12.073","article-title":"Quantum cascade lasers in chemical physics","volume":"487","author":"Curl","year":"2010","journal-title":"Chem. Phys. Lett."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"1902","DOI":"10.1364\/OL.27.001902","article-title":"Quartz-enhanced photoacoustic spectroscopy","volume":"27","author":"Kosterev","year":"2002","journal-title":"Opt. Lett."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"091114","DOI":"10.1063\/1.4867268","article-title":"Intracavity quartz-enhanced photoacoustic sensor","volume":"104","author":"Borri","year":"2014","journal-title":"Appl. Phys. Lett."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"1256","DOI":"10.1098\/rstb.2011.0377","article-title":"Stratospheric ozone depletion due to nitrous oxide: influences of other gases","volume":"367","author":"Portmann","year":"2012","journal-title":"Phil. Trans. R. Soc. B"},{"key":"ref_16","unstructured":"The Nobel Prize in Physiology or Medicine 1998. Available online: http:\/\/www.nobelprize.org\/nobel_prizes\/medicine\/laureates\/1998\/press.html."},{"key":"ref_17","unstructured":"Sievers Nitric Oxide Analyzer Overview. Available online: http:\/\/www.geinstruments.com\/products-and-services\/nitric-oxide-analyzer."},{"key":"ref_18","unstructured":"Chemiluminescence NO\/NOx Gas Analysis. Available online: http:\/\/www.k2bw.com\/5_c_31.htm."},{"key":"ref_19","unstructured":"Model 410 Nitric Oxide Monitor. Available online: http:\/\/www.twobtech.com\/model-410-no-monitor.html."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"407","DOI":"10.1007\/s00340-012-5005-x","article-title":"Linewidth of a quantum-cascade laser assessed from its frequency noise spectrum and impact of the current driver","volume":"109","author":"Tombez","year":"2012","journal-title":"Appl. Phys. B Lasers Opt."},{"key":"ref_21","doi-asserted-by":"crossref","unstructured":"Saleh, B.E.A., and Teich, M.C. (1991). Fundamentals of Photonics, John Wiley & Sons Inc.","DOI":"10.1002\/0471213748"},{"key":"ref_22","doi-asserted-by":"crossref","unstructured":"Glassner, A. (1990). Graphics Gems, Academic Press.","DOI":"10.1016\/B978-0-08-050753-8.50133-9"},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"7570","DOI":"10.3390\/s130607570","article-title":"Aspects of the Application of Cavity Enhanced Spectroscopy to Nitrogen Oxides Detection","volume":"13","author":"Wojtas","year":"2013","journal-title":"Sensors"},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"736","DOI":"10.1039\/C4AN01158A","article-title":"High finesse optical cavity coupled with a quartz enhanced photoacoustic spectroscopic sensor","volume":"140","author":"Patimisco","year":"2015","journal-title":"Analyst"},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"2287","DOI":"10.4155\/bio.13.183","article-title":"Detection of volatile organic compounds as biomarkers in breath analysis by different analytical techniques","volume":"5","author":"Buszewski","year":"2013","journal-title":"Bioanalysis"}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/17\/3\/513\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T18:29:42Z","timestamp":1760207382000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/17\/3\/513"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2017,3,4]]},"references-count":25,"journal-issue":{"issue":"3","published-online":{"date-parts":[[2017,3]]}},"alternative-id":["s17030513"],"URL":"https:\/\/doi.org\/10.3390\/s17030513","relation":{},"ISSN":["1424-8220"],"issn-type":[{"value":"1424-8220","type":"electronic"}],"subject":[],"published":{"date-parts":[[2017,3,4]]}}}