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The sensor is based on a 3D-printed resonant cell in combination with a continuous wave mode-hop-free external cavity quantum cascade laser to rapidly acquire gas absorption data in the midinfrared range. The cell is designed so as to minimize the window PA background at a selected acoustic resonance. The goal is a resonant PA cell capable of detecting the traces of gases using wavelength modulation of the laser source and second harmonic detection. The versatility and enhancement of the limit of detection at sub-ppm levels are investigated by monitoring specific lines of hydrogen sulfide (H<jats:sub>2<\/jats:sub>S). The noise-equivalent absorption normalized to laser-beam power and detection bandwidth is <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M1\"><mml:mn>1.07<\/mml:mn><mml:mo>\u00d7<\/mml:mo><mml:mn>10<\/mml:mn><\/mml:math><jats:sup>-8<\/jats:sup>\u00a0W\u2009cm<jats:sup>-1<\/jats:sup>\u00a0Hz<jats:sup>-1\/2<\/jats:sup> for H<jats:sub>2<\/jats:sub>S targeting the absorption line at 1247.2\u2009cm<jats:sup>\u22121<\/jats:sup>. These properties make the sensor suitable for various practical sensors for water quality applications.<\/jats:p>","DOI":"10.1155\/2019\/6437431","type":"journal-article","created":{"date-parts":[[2019,3,14]],"date-time":"2019-03-14T19:35:26Z","timestamp":1552592126000},"page":"1-7","source":"Crossref","is-referenced-by-count":9,"title":["Hydrogen Sulfide Detection in the Midinfrared Using a 3D-Printed Resonant Gas Cell"],"prefix":"10.1155","volume":"2019","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0541-8310","authenticated-orcid":true,"given":"Oscar E.","family":"Bonilla-Manrique","sequence":"first","affiliation":[{"name":"Electronics Technology Department, Carlos III University of Madrid, Legan\u00e9s 28911, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Harald","family":"Moser","sequence":"additional","affiliation":[{"name":"Institute of Chemical Technologies and Analytics, Vienna University of Technology, Vienna 1060, Austria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Pedro","family":"Mart\u00edn-Mateos","sequence":"additional","affiliation":[{"name":"Electronics Technology Department, Carlos III University of Madrid, Legan\u00e9s 28911, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Bernhard","family":"Lendl","sequence":"additional","affiliation":[{"name":"Institute of Chemical Technologies and Analytics, Vienna University of Technology, Vienna 1060, Austria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Marta","family":"Ruiz-Llata","sequence":"additional","affiliation":[{"name":"Electronics Technology Department, Carlos III University of Madrid, Legan\u00e9s 28911, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","reference":[{"key":"1","first-page":"2004","year":"2008","journal-title":"Occupational Health & Safety"},{"key":"2","doi-asserted-by":"publisher","DOI":"10.1080\/10643389.2015.1010427"},{"key":"3","doi-asserted-by":"publisher","DOI":"10.4269\/ajtmh.13-0067"},{"key":"4","doi-asserted-by":"publisher","DOI":"10.1016\/j.trac.2011.08.008"},{"key":"5","doi-asserted-by":"publisher","DOI":"10.1364\/AOP.8.000586"},{"key":"6","doi-asserted-by":"publisher","DOI":"10.1364\/oe.25.017541"},{"key":"7","doi-asserted-by":"publisher","DOI":"10.3788\/col20100803.0266"},{"key":"8","doi-asserted-by":"publisher","DOI":"10.1016\/j.sna.2017.06.036"},{"issue":"1","key":"9","first-page":"1","volume":"1","year":"2015","journal-title":"Journal of Environment"},{"key":"10","doi-asserted-by":"publisher","DOI":"10.1088\/0957-0233\/23\/1\/012001"},{"key":"11","doi-asserted-by":"publisher","DOI":"10.1007\/s00340-017-6717-8"},{"key":"12","doi-asserted-by":"publisher","DOI":"10.1016\/j.jqsrt.2013.07.002"},{"key":"13","doi-asserted-by":"publisher","DOI":"10.1016\/j.infrared.2005.09.001"},{"key":"14","doi-asserted-by":"publisher","DOI":"10.3390\/s91209616"},{"key":"15","doi-asserted-by":"publisher","DOI":"10.1364\/AO.50.004936"},{"key":"16","doi-asserted-by":"publisher","DOI":"10.1364\/OE.26.009666"},{"key":"17","doi-asserted-by":"publisher","DOI":"10.1063\/1.1353198"},{"key":"18","doi-asserted-by":"publisher","DOI":"10.1016\/j.optlastec.2009.12.012"},{"key":"19","doi-asserted-by":"publisher","DOI":"10.1016\/j.matdes.2014.02.038"}],"container-title":["Journal of Sensors"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/downloads.hindawi.com\/journals\/js\/2019\/6437431.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/downloads.hindawi.com\/journals\/js\/2019\/6437431.xml","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/downloads.hindawi.com\/journals\/js\/2019\/6437431.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2019,3,14]],"date-time":"2019-03-14T19:35:33Z","timestamp":1552592133000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.hindawi.com\/journals\/js\/2019\/6437431\/"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2019,3,14]]},"references-count":19,"alternative-id":["6437431","6437431"],"URL":"https:\/\/doi.org\/10.1155\/2019\/6437431","relation":{},"ISSN":["1687-725X","1687-7268"],"issn-type":[{"value":"1687-725X","type":"print"},{"value":"1687-7268","type":"electronic"}],"subject":[],"published":{"date-parts":[[2019,3,14]]}}}