Multiple optical path length reflections enhancement based on balloon-type photoacoustic cell for trace gas sensing
A novel balloon-type photoacoustic cell (BTPAC) is proposed to facilitate the detection limitations of acetylene (C2H2) gas achieving ppb level. Here, an ellipsoidal photoacoustic cavity is employed as the platform for gas-light interaction. By strategically directing the excitation source towards t...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-02-01
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| Series: | Photoacoustics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2213597924000983 |
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| author | Ruiming Wu Wenjun Ni Chunyong Yang Bingze He Ping Lu Sixiang Ran Zhongke Zhao Perry Ping Shum |
| author_facet | Ruiming Wu Wenjun Ni Chunyong Yang Bingze He Ping Lu Sixiang Ran Zhongke Zhao Perry Ping Shum |
| author_sort | Ruiming Wu |
| collection | DOAJ |
| description | A novel balloon-type photoacoustic cell (BTPAC) is proposed to facilitate the detection limitations of acetylene (C2H2) gas achieving ppb level. Here, an ellipsoidal photoacoustic cavity is employed as the platform for gas-light interaction. By strategically directing the excitation source towards the focal point of the ellipsoidal cavity, ensuring its trajectory traverses the focal point upon each reflection from the interior walls. This path increases the gas absorption path length and improves the efficiency of the laser-gas interaction process. Experimental results show that the quality factor of the BTPAC is 224.24 under normal temperature and pressure conditions. Notably, the system maintains a high signal-to-noise ratio even at a C2H2 concentration of 0.1 ppm. Moreover, the minimum detection limit (MDL) and normalized noise equivalent absorption can be calculated to be 3.86 ppb, 6.94·10−10 cm−1·W·Hz−1/2, respectively. Finally, the MDL of the sensor reaches to 0.71 ppb when the integration time reaches 100 s. |
| format | Article |
| id | doaj-art-57ba78649898424499cc096435137719 |
| institution | Kabale University |
| issn | 2213-5979 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Photoacoustics |
| spelling | doaj-art-57ba78649898424499cc0964351377192025-01-17T04:49:32ZengElsevierPhotoacoustics2213-59792025-02-0141100681Multiple optical path length reflections enhancement based on balloon-type photoacoustic cell for trace gas sensingRuiming Wu0Wenjun Ni1Chunyong Yang2Bingze He3Ping Lu4Sixiang Ran5Zhongke Zhao6Perry Ping Shum7Hubei Key Laboratory of Intelligent Wireless Communications, Hubei Engineering Research Center of Intelligent IOT technology, College of Electronics and Information Engineering, South-Central Minzu University, 430074, ChinaHubei Key Laboratory of Intelligent Wireless Communications, Hubei Engineering Research Center of Intelligent IOT technology, College of Electronics and Information Engineering, South-Central Minzu University, 430074, China; Corresponding author.Hubei Key Laboratory of Intelligent Wireless Communications, Hubei Engineering Research Center of Intelligent IOT technology, College of Electronics and Information Engineering, South-Central Minzu University, 430074, ChinaHubei Key Laboratory of Intelligent Wireless Communications, Hubei Engineering Research Center of Intelligent IOT technology, College of Electronics and Information Engineering, South-Central Minzu University, 430074, ChinaWuhan National Laboratory for Optoelectronics (WNLO) and National Engineering Research Center of Next Generation Internet Access System, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, ChinaCollege of Engineering, Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, ChinaCollege of Engineering, Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, ChinaCollege of Engineering, Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, ChinaA novel balloon-type photoacoustic cell (BTPAC) is proposed to facilitate the detection limitations of acetylene (C2H2) gas achieving ppb level. Here, an ellipsoidal photoacoustic cavity is employed as the platform for gas-light interaction. By strategically directing the excitation source towards the focal point of the ellipsoidal cavity, ensuring its trajectory traverses the focal point upon each reflection from the interior walls. This path increases the gas absorption path length and improves the efficiency of the laser-gas interaction process. Experimental results show that the quality factor of the BTPAC is 224.24 under normal temperature and pressure conditions. Notably, the system maintains a high signal-to-noise ratio even at a C2H2 concentration of 0.1 ppm. Moreover, the minimum detection limit (MDL) and normalized noise equivalent absorption can be calculated to be 3.86 ppb, 6.94·10−10 cm−1·W·Hz−1/2, respectively. Finally, the MDL of the sensor reaches to 0.71 ppb when the integration time reaches 100 s.http://www.sciencedirect.com/science/article/pii/S2213597924000983Gas sensorNew type photoacoustic cellMultiple optical path length reflectionsPhotoacoustic spectroscopy |
| spellingShingle | Ruiming Wu Wenjun Ni Chunyong Yang Bingze He Ping Lu Sixiang Ran Zhongke Zhao Perry Ping Shum Multiple optical path length reflections enhancement based on balloon-type photoacoustic cell for trace gas sensing Photoacoustics Gas sensor New type photoacoustic cell Multiple optical path length reflections Photoacoustic spectroscopy |
| title | Multiple optical path length reflections enhancement based on balloon-type photoacoustic cell for trace gas sensing |
| title_full | Multiple optical path length reflections enhancement based on balloon-type photoacoustic cell for trace gas sensing |
| title_fullStr | Multiple optical path length reflections enhancement based on balloon-type photoacoustic cell for trace gas sensing |
| title_full_unstemmed | Multiple optical path length reflections enhancement based on balloon-type photoacoustic cell for trace gas sensing |
| title_short | Multiple optical path length reflections enhancement based on balloon-type photoacoustic cell for trace gas sensing |
| title_sort | multiple optical path length reflections enhancement based on balloon type photoacoustic cell for trace gas sensing |
| topic | Gas sensor New type photoacoustic cell Multiple optical path length reflections Photoacoustic spectroscopy |
| url | http://www.sciencedirect.com/science/article/pii/S2213597924000983 |
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