A Trace Carbon Monoxide Sensor Based on Differential Absorption Spectroscopy Using Mid-Infrared Quantum Cascade Laser
Carbon monoxide (CO), as a dangerous emission gas, is easy to accumulate in the complex underground environment and poses a serious threat to the safety of miners. In this paper, a sensor using a quantum cascade laser with an excitation wavelength of 4.65 μm as the light source, and a compa...
| Main Authors: | , , , , |
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| Format: | Article |
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MDPI AG
2018-12-01
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| Series: | Micromachines |
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| Online Access: | https://www.mdpi.com/2072-666X/9/12/670 |
| _version_ | 1811232308385021952 |
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| author | Chen Chen Qiang Ren Heng Piao Peng Wang Yanzhang Wang |
| author_facet | Chen Chen Qiang Ren Heng Piao Peng Wang Yanzhang Wang |
| author_sort | Chen Chen |
| collection | DOAJ |
| description | Carbon monoxide (CO), as a dangerous emission gas, is easy to accumulate in the complex underground environment and poses a serious threat to the safety of miners. In this paper, a sensor using a quantum cascade laser with an excitation wavelength of 4.65 μm as the light source, and a compact multiple reflection cell with a light path length of 12 m is introduced to detect trace CO gas. The sensor adopts the long optical path differential absorption spectroscopy technique (LOP-DAST) and obtains minimum detection limit (MDL) of 108 ppbv by comparing the residual difference between the measured spectrum and the Voigt theoretical spectrum. As a comparison, the MDL of the proposed sensor was also estimated by Allan deviation; the minimum value of 61 ppbv is achieved while integration time is 40 s. The stability of the sensor can reach 2.1 × 10<sup>−3</sup> during the 2 h experimental test and stability of 1.7 × 10<sup>−2</sup> can still be achieved in a longer 12 h experimental test. |
| first_indexed | 2024-04-12T11:00:12Z |
| format | Article |
| id | doaj.art-57bfc5265e874c3bbca9ec0f6f42e1f6 |
| institution | Directory Open Access Journal |
| issn | 2072-666X |
| language | English |
| last_indexed | 2024-04-12T11:00:12Z |
| publishDate | 2018-12-01 |
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| series | Micromachines |
| spelling | doaj.art-57bfc5265e874c3bbca9ec0f6f42e1f62022-12-22T03:35:58ZengMDPI AGMicromachines2072-666X2018-12-0191267010.3390/mi9120670mi9120670A Trace Carbon Monoxide Sensor Based on Differential Absorption Spectroscopy Using Mid-Infrared Quantum Cascade LaserChen Chen0Qiang Ren1Heng Piao2Peng Wang3Yanzhang Wang4College of Instrumentation & Electrical Engineering, Key Laboratory of Geophysical Exploration Equipment, Ministry of Education of China, Jilin University, Changchun 130026, ChinaCollege of Instrumentation & Electrical Engineering, Key Laboratory of Geophysical Exploration Equipment, Ministry of Education of China, Jilin University, Changchun 130026, ChinaCollege of Instrumentation & Electrical Engineering, Key Laboratory of Geophysical Exploration Equipment, Ministry of Education of China, Jilin University, Changchun 130026, ChinaCollege of Instrumentation & Electrical Engineering, Key Laboratory of Geophysical Exploration Equipment, Ministry of Education of China, Jilin University, Changchun 130026, ChinaCollege of Instrumentation & Electrical Engineering, Key Laboratory of Geophysical Exploration Equipment, Ministry of Education of China, Jilin University, Changchun 130026, ChinaCarbon monoxide (CO), as a dangerous emission gas, is easy to accumulate in the complex underground environment and poses a serious threat to the safety of miners. In this paper, a sensor using a quantum cascade laser with an excitation wavelength of 4.65 μm as the light source, and a compact multiple reflection cell with a light path length of 12 m is introduced to detect trace CO gas. The sensor adopts the long optical path differential absorption spectroscopy technique (LOP-DAST) and obtains minimum detection limit (MDL) of 108 ppbv by comparing the residual difference between the measured spectrum and the Voigt theoretical spectrum. As a comparison, the MDL of the proposed sensor was also estimated by Allan deviation; the minimum value of 61 ppbv is achieved while integration time is 40 s. The stability of the sensor can reach 2.1 × 10<sup>−3</sup> during the 2 h experimental test and stability of 1.7 × 10<sup>−2</sup> can still be achieved in a longer 12 h experimental test.https://www.mdpi.com/2072-666X/9/12/670Trace carbon monoxide sensormid-infrared spectrumquantum cascade laserdifferential absorption spectroscopyresidual analysis |
| spellingShingle | Chen Chen Qiang Ren Heng Piao Peng Wang Yanzhang Wang A Trace Carbon Monoxide Sensor Based on Differential Absorption Spectroscopy Using Mid-Infrared Quantum Cascade Laser Micromachines Trace carbon monoxide sensor mid-infrared spectrum quantum cascade laser differential absorption spectroscopy residual analysis |
| title | A Trace Carbon Monoxide Sensor Based on Differential Absorption Spectroscopy Using Mid-Infrared Quantum Cascade Laser |
| title_full | A Trace Carbon Monoxide Sensor Based on Differential Absorption Spectroscopy Using Mid-Infrared Quantum Cascade Laser |
| title_fullStr | A Trace Carbon Monoxide Sensor Based on Differential Absorption Spectroscopy Using Mid-Infrared Quantum Cascade Laser |
| title_full_unstemmed | A Trace Carbon Monoxide Sensor Based on Differential Absorption Spectroscopy Using Mid-Infrared Quantum Cascade Laser |
| title_short | A Trace Carbon Monoxide Sensor Based on Differential Absorption Spectroscopy Using Mid-Infrared Quantum Cascade Laser |
| title_sort | trace carbon monoxide sensor based on differential absorption spectroscopy using mid infrared quantum cascade laser |
| topic | Trace carbon monoxide sensor mid-infrared spectrum quantum cascade laser differential absorption spectroscopy residual analysis |
| url | https://www.mdpi.com/2072-666X/9/12/670 |
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