Application of Continuous-Wave Cavity Ring-Down Spectroscopy to Laminar Flames
In this paper, we describe the application of diode-laser continuous-wave cavity ring-down spectroscopy (cw-CRDS) to in-situ flame diagnostics. Spectra of the P17e acetylene feature at 1535.4 nm were recorded in a premixed laminar ethylene/air flame. The overall absorption of the feature was measure...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IEEE
2016-01-01
|
| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/7378838/ |
| _version_ | 1797838023065337856 |
|---|---|
| author | Gordon S. Humphries Iain S. Burns Michael Lengden |
| author_facet | Gordon S. Humphries Iain S. Burns Michael Lengden |
| author_sort | Gordon S. Humphries |
| collection | DOAJ |
| description | In this paper, we describe the application of diode-laser continuous-wave cavity ring-down spectroscopy (cw-CRDS) to in-situ flame diagnostics. Spectra of the P17e acetylene feature at 1535.4 nm were recorded in a premixed laminar ethylene/air flame. The overall absorption of the feature was measured to be <inline-formula> <tex-math notation="LaTeX">$\approx\!\!1.5\times 10^{-4}\ \text{cm}^{-1}$</tex-math></inline-formula>, which is a short distance above the reaction zone for a flame fuel equivalence ratio of 1.66, and the minimum detection limit <inline-formula> <tex-math notation="LaTeX">$(3\sigma)$</tex-math></inline-formula> of the system was calculated to be <inline-formula> <tex-math notation="LaTeX">$1.2\times 10^{-5}\ \text{cm}^{-1}$</tex-math></inline-formula>. This demonstrates the potential of the technique for the measurement of weakly absorbing species in flames. Finally, we discuss the advantages and limitations of the cw-CRDS technique for flame measurements. |
| first_indexed | 2024-04-09T15:35:13Z |
| format | Article |
| id | doaj.art-24550b816bb0420c85be9d679ba72833 |
| institution | Directory Open Access Journal |
| issn | 1943-0655 |
| language | English |
| last_indexed | 2024-04-09T15:35:13Z |
| publishDate | 2016-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj.art-24550b816bb0420c85be9d679ba728332023-04-27T23:00:18ZengIEEEIEEE Photonics Journal1943-06552016-01-018111010.1109/JPHOT.2016.25175757378838Application of Continuous-Wave Cavity Ring-Down Spectroscopy to Laminar FlamesGordon S. Humphries0Iain S. Burns1Michael Lengden2Dept. of Electron. & Electr. Eng., Univ. of Strathclyde, Glasgow, UKDept. of Chem. & Process Eng., Univ. of Strathclyde, Glasgow, UKDept. of Electron. & Electr. Eng., Univ. of Strathclyde, Glasgow, UKIn this paper, we describe the application of diode-laser continuous-wave cavity ring-down spectroscopy (cw-CRDS) to in-situ flame diagnostics. Spectra of the P17e acetylene feature at 1535.4 nm were recorded in a premixed laminar ethylene/air flame. The overall absorption of the feature was measured to be <inline-formula> <tex-math notation="LaTeX">$\approx\!\!1.5\times 10^{-4}\ \text{cm}^{-1}$</tex-math></inline-formula>, which is a short distance above the reaction zone for a flame fuel equivalence ratio of 1.66, and the minimum detection limit <inline-formula> <tex-math notation="LaTeX">$(3\sigma)$</tex-math></inline-formula> of the system was calculated to be <inline-formula> <tex-math notation="LaTeX">$1.2\times 10^{-5}\ \text{cm}^{-1}$</tex-math></inline-formula>. This demonstrates the potential of the technique for the measurement of weakly absorbing species in flames. Finally, we discuss the advantages and limitations of the cw-CRDS technique for flame measurements.https://ieeexplore.ieee.org/document/7378838/cw-CRDSCombustionCavity Ring-DownDiode laser. |
| spellingShingle | Gordon S. Humphries Iain S. Burns Michael Lengden Application of Continuous-Wave Cavity Ring-Down Spectroscopy to Laminar Flames IEEE Photonics Journal cw-CRDS Combustion Cavity Ring-Down Diode laser. |
| title | Application of Continuous-Wave Cavity Ring-Down Spectroscopy to Laminar Flames |
| title_full | Application of Continuous-Wave Cavity Ring-Down Spectroscopy to Laminar Flames |
| title_fullStr | Application of Continuous-Wave Cavity Ring-Down Spectroscopy to Laminar Flames |
| title_full_unstemmed | Application of Continuous-Wave Cavity Ring-Down Spectroscopy to Laminar Flames |
| title_short | Application of Continuous-Wave Cavity Ring-Down Spectroscopy to Laminar Flames |
| title_sort | application of continuous wave cavity ring down spectroscopy to laminar flames |
| topic | cw-CRDS Combustion Cavity Ring-Down Diode laser. |
| url | https://ieeexplore.ieee.org/document/7378838/ |
| work_keys_str_mv | AT gordonshumphries applicationofcontinuouswavecavityringdownspectroscopytolaminarflames AT iainsburns applicationofcontinuouswavecavityringdownspectroscopytolaminarflames AT michaellengden applicationofcontinuouswavecavityringdownspectroscopytolaminarflames |