A Dual-Gas Sensor Using Photoacoustic Spectroscopy Based on a Single Acoustic Resonator
A dual-gas photoacoustic spectroscopy (PAS) sensor based on wavelength modulation spectroscopy (WMS) was developed and experimentally demonstrated. Distributed feedback (DFB) laser diodes, emitting at 1512 and 1653 nm, were utilized as the excitation sources for the simultaneous measurement of NH<...
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| Format: | Article |
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MDPI AG
2021-06-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/11/11/5224 |
| _version_ | 1797531367348633600 |
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| author | Yiming Jiang Tie Zhang Gaoxuan Wang Sailing He |
| author_facet | Yiming Jiang Tie Zhang Gaoxuan Wang Sailing He |
| author_sort | Yiming Jiang |
| collection | DOAJ |
| description | A dual-gas photoacoustic spectroscopy (PAS) sensor based on wavelength modulation spectroscopy (WMS) was developed and experimentally demonstrated. Distributed feedback (DFB) laser diodes, emitting at 1512 and 1653 nm, were utilized as the excitation sources for the simultaneous measurement of NH<sub>3</sub> and CH<sub>4</sub>, respectively. The PAS signal was excited by modulating the DFB laser at the first longitudinal resonant frequency of a cylindrical acoustic resonator. Absorption lines for NH<sub>3</sub> and CH<sub>4</sub> were simultaneously recorded during one frequency scan of the DFB lasers without using any optical switch. The interference of NH<sub>3</sub> and CH<sub>4</sub> on each other was investigated for accurate detection. The limits of detection (LoDs) of the PAS sensor for NH<sub>3</sub> and CH<sub>4</sub> for an integration time of 100 s were determined to be 0.1 and 0.3 ppm, respectively. The present PAS sensor provides a new scheme for multi-gas analysis with the advantages of cost-effectiveness, a simple structure and multi-wavelength operation. |
| first_indexed | 2024-03-10T10:42:46Z |
| format | Article |
| id | doaj.art-3b640217c40f4b7e92bd7974974d7f42 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T10:42:46Z |
| publishDate | 2021-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-3b640217c40f4b7e92bd7974974d7f422023-11-21T22:49:10ZengMDPI AGApplied Sciences2076-34172021-06-011111522410.3390/app11115224A Dual-Gas Sensor Using Photoacoustic Spectroscopy Based on a Single Acoustic ResonatorYiming Jiang0Tie Zhang1Gaoxuan Wang2Sailing He3Centre for Optical and Electromagnetic Research, National Engineering Research Center for Optical Instruments, Zhejiang Provincial Key Laboratory for Sensing Technologies, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310058, ChinaCentre for Optical and Electromagnetic Research, National Engineering Research Center for Optical Instruments, Zhejiang Provincial Key Laboratory for Sensing Technologies, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310058, ChinaCentre for Optical and Electromagnetic Research, National Engineering Research Center for Optical Instruments, Zhejiang Provincial Key Laboratory for Sensing Technologies, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310058, ChinaCentre for Optical and Electromagnetic Research, National Engineering Research Center for Optical Instruments, Zhejiang Provincial Key Laboratory for Sensing Technologies, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310058, ChinaA dual-gas photoacoustic spectroscopy (PAS) sensor based on wavelength modulation spectroscopy (WMS) was developed and experimentally demonstrated. Distributed feedback (DFB) laser diodes, emitting at 1512 and 1653 nm, were utilized as the excitation sources for the simultaneous measurement of NH<sub>3</sub> and CH<sub>4</sub>, respectively. The PAS signal was excited by modulating the DFB laser at the first longitudinal resonant frequency of a cylindrical acoustic resonator. Absorption lines for NH<sub>3</sub> and CH<sub>4</sub> were simultaneously recorded during one frequency scan of the DFB lasers without using any optical switch. The interference of NH<sub>3</sub> and CH<sub>4</sub> on each other was investigated for accurate detection. The limits of detection (LoDs) of the PAS sensor for NH<sub>3</sub> and CH<sub>4</sub> for an integration time of 100 s were determined to be 0.1 and 0.3 ppm, respectively. The present PAS sensor provides a new scheme for multi-gas analysis with the advantages of cost-effectiveness, a simple structure and multi-wavelength operation.https://www.mdpi.com/2076-3417/11/11/5224photoacoustic spectroscopyabsorptionmulti-gas sensingdiode laser |
| spellingShingle | Yiming Jiang Tie Zhang Gaoxuan Wang Sailing He A Dual-Gas Sensor Using Photoacoustic Spectroscopy Based on a Single Acoustic Resonator Applied Sciences photoacoustic spectroscopy absorption multi-gas sensing diode laser |
| title | A Dual-Gas Sensor Using Photoacoustic Spectroscopy Based on a Single Acoustic Resonator |
| title_full | A Dual-Gas Sensor Using Photoacoustic Spectroscopy Based on a Single Acoustic Resonator |
| title_fullStr | A Dual-Gas Sensor Using Photoacoustic Spectroscopy Based on a Single Acoustic Resonator |
| title_full_unstemmed | A Dual-Gas Sensor Using Photoacoustic Spectroscopy Based on a Single Acoustic Resonator |
| title_short | A Dual-Gas Sensor Using Photoacoustic Spectroscopy Based on a Single Acoustic Resonator |
| title_sort | dual gas sensor using photoacoustic spectroscopy based on a single acoustic resonator |
| topic | photoacoustic spectroscopy absorption multi-gas sensing diode laser |
| url | https://www.mdpi.com/2076-3417/11/11/5224 |
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