| DOI | Resolve DOI: https://doi.org/10.1117/12.2545014 |
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| Author | Search for: Razavipour, Seyed Ghasem1; Search for: Gupta, James A.2; Search for: Sabiston, Graeme1; Search for: Sabourin, Nicaulas2; Search for: Bezinger, Andrew2; Search for: Lapointe, Jean2; Search for: Poitras, Daniel2 |
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| Editor | Search for: Razeghi, Manijeh; Search for: Lewis, Jay S.; Search for: Khodaparast, Giti A.; Search for: Khalili, Pedram |
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| Affiliation | - National Research Council Canada. Security and Disruptive Technologies
- National Research Council Canada. Advanced Electronics and Photonics
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| Format | Text, Article |
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| Conference | Quantum Sensing and Nano Electronics and Photonics XVII, February 1-6, 2020, San Francisco, US |
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| Subject | spectroscopy; TDLAS; wavelength modulation; methane |
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| Abstract | A compact, single-pass and low-power-consumption methane sensing system is presented and its sensitivity is investigated for a set of reference cells with pressures of 7.4, 74 and 740 Torr and the same methane concentration of 1351 ppm. A single-mode GaSb-based continuous-wave (CW) distributed feedback (DFB) tunable diode laser at 3270 nm and wavelength modulation spectroscopy were employed to collect 2f spectra in the ν₃,R₃ band of ¹²CH₄. A modulated Voigt line profile model was used to fit the collected 2f spectra. The best detectivity of 4 ppbm is obtained for the highest pressure cell using an Allan-Werle variance analysis. |
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| Publication date | 2020-03-05 |
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| Publisher | SPIE |
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| In | |
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| Series | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 1855ff80-e1d5-4b9a-b9df-bb93d95bde28 |
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| Record created | 2020-07-10 |
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| Record modified | 2021-09-17 |
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