Palm-sized methane TDLAS sensor based on a mini-multi-pass cell and a quartz tuning fork as a thermal detector
A palm-sized methane (CH4) tunable diode laser absorption spectroscopy (TDLAS) sensor is reported, in which a quartz tuning fork (QTF) is used as a thermal detector, working together with a mini-multi-pass cell (mini-MPC) to compose a gas detection module (GDM) with a compact dimension of 78 mm × 40 mm × 40 mm. A 1.65 µm near-infrared distributed feedback (DFB) laser is installed in the sensor for CH4 detection. A minimum detection limit (MDL) of 52 ppb is achieved at an integration time of 300 ms, corresponding to a normalized noise equivalent absorption coefficient (NNEA) of 2.1×10-8 cm-1W/Hz1/2. A seven-day continuous monitoring of atmospheric CH4 concentration is implemented to verify the sensor's long-term stability.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2021 |
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| Erschienen: |
2021 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:29 |
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| Enthalten in: |
Optics express - 29(2021), 8 vom: 12. Apr., Seite 12357-12364 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Wei, Tingting [VerfasserIn] |
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| Links: |
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| Anmerkungen: |
Date Revised 14.05.2021 published: Print Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1364/OE.423217 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM325363773 |
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| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a A palm-sized methane (CH4) tunable diode laser absorption spectroscopy (TDLAS) sensor is reported, in which a quartz tuning fork (QTF) is used as a thermal detector, working together with a mini-multi-pass cell (mini-MPC) to compose a gas detection module (GDM) with a compact dimension of 78 mm × 40 mm × 40 mm. A 1.65 µm near-infrared distributed feedback (DFB) laser is installed in the sensor for CH4 detection. A minimum detection limit (MDL) of 52 ppb is achieved at an integration time of 300 ms, corresponding to a normalized noise equivalent absorption coefficient (NNEA) of 2.1×10-8 cm-1W/Hz1/2. A seven-day continuous monitoring of atmospheric CH4 concentration is implemented to verify the sensor's long-term stability | ||
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| 700 | 1 | |a Dong, Lei |e verfasserin |4 aut | |
| 700 | 1 | |a Cui, Ruyue |e verfasserin |4 aut | |
| 700 | 1 | |a Jia, Suotang |e verfasserin |4 aut | |
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