Compact optical fiber photoacoustic gas sensor with integrated multi-pass cell
Optical fiber acoustic sensors with miniature size and high sensitivity are attractive to develop compact photoacoustic spectroscopy. Here, a compact photoacoustic gas sensor was demonstrated by utilizing a diaphragm-based fiber-optic Fabry-Perot cavity as both the acoustic sensor and the multipass...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-08-01
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| Series: | Photoacoustics |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2213597923000770 |
| _version_ | 1797731049618276352 |
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| author | Enbo Fan Haojie Liu Chao Wang Jun Ma Bai-Ou Guan |
| author_facet | Enbo Fan Haojie Liu Chao Wang Jun Ma Bai-Ou Guan |
| author_sort | Enbo Fan |
| collection | DOAJ |
| description | Optical fiber acoustic sensors with miniature size and high sensitivity are attractive to develop compact photoacoustic spectroscopy. Here, a compact photoacoustic gas sensor was demonstrated by utilizing a diaphragm-based fiber-optic Fabry-Perot cavity as both the acoustic sensor and the multipass cell. A nanoscale graphite film was used as the flexible diaphragm to increase the acoustic sensitivity of the Fabry-Perot cavity and the cavity inner surface was coated with highly-reflective Au film to form a multipass cell for amplification of the photoacoustic signal. With a laser power of 20 mW at 1532.8 nm, the sensor demonstrated a low detection limit of ∼ 50 ppb for C2H2 gas with an integration time of ∼ 100 s. The optical fiber photoacoustic gas sensor with a millimeter-scale diameter and ppb-level detection limit is promising for trace gas sensing in various areas including industrial process and environmental monitoring. |
| first_indexed | 2024-03-12T11:54:08Z |
| format | Article |
| id | doaj.art-daa4592c6f314bc8a178c05d7d0fd21a |
| institution | Directory Open Access Journal |
| issn | 2213-5979 |
| language | English |
| last_indexed | 2024-03-12T11:54:08Z |
| publishDate | 2023-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Photoacoustics |
| spelling | doaj.art-daa4592c6f314bc8a178c05d7d0fd21a2023-08-31T05:02:42ZengElsevierPhotoacoustics2213-59792023-08-0132100524Compact optical fiber photoacoustic gas sensor with integrated multi-pass cellEnbo Fan0Haojie Liu1Chao Wang2Jun Ma3Bai-Ou Guan4Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou 511443, ChinaGuangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou 511443, ChinaThe Center for Smart Sensing System, Julong College, Shenzhen Technology University, Shenzhen 518118, China; Corresponding authors.Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou 511443, China; Corresponding authors.Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou 511443, ChinaOptical fiber acoustic sensors with miniature size and high sensitivity are attractive to develop compact photoacoustic spectroscopy. Here, a compact photoacoustic gas sensor was demonstrated by utilizing a diaphragm-based fiber-optic Fabry-Perot cavity as both the acoustic sensor and the multipass cell. A nanoscale graphite film was used as the flexible diaphragm to increase the acoustic sensitivity of the Fabry-Perot cavity and the cavity inner surface was coated with highly-reflective Au film to form a multipass cell for amplification of the photoacoustic signal. With a laser power of 20 mW at 1532.8 nm, the sensor demonstrated a low detection limit of ∼ 50 ppb for C2H2 gas with an integration time of ∼ 100 s. The optical fiber photoacoustic gas sensor with a millimeter-scale diameter and ppb-level detection limit is promising for trace gas sensing in various areas including industrial process and environmental monitoring.http://www.sciencedirect.com/science/article/pii/S2213597923000770Fiber-optic sensorPhotoacoustic spectroscopyFabry-Perot cavityMultipass cellAcoustic wave |
| spellingShingle | Enbo Fan Haojie Liu Chao Wang Jun Ma Bai-Ou Guan Compact optical fiber photoacoustic gas sensor with integrated multi-pass cell Photoacoustics Fiber-optic sensor Photoacoustic spectroscopy Fabry-Perot cavity Multipass cell Acoustic wave |
| title | Compact optical fiber photoacoustic gas sensor with integrated multi-pass cell |
| title_full | Compact optical fiber photoacoustic gas sensor with integrated multi-pass cell |
| title_fullStr | Compact optical fiber photoacoustic gas sensor with integrated multi-pass cell |
| title_full_unstemmed | Compact optical fiber photoacoustic gas sensor with integrated multi-pass cell |
| title_short | Compact optical fiber photoacoustic gas sensor with integrated multi-pass cell |
| title_sort | compact optical fiber photoacoustic gas sensor with integrated multi pass cell |
| topic | Fiber-optic sensor Photoacoustic spectroscopy Fabry-Perot cavity Multipass cell Acoustic wave |
| url | http://www.sciencedirect.com/science/article/pii/S2213597923000770 |
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