Difference frequency generation in periodically poled lithium niobate and its use in the detection of atmospheric methane
Continuous wave mid-infrared radiation at 3.36 μm (power ≈ 18 μW) has been produced by difference frequency generation of the fundamental of a YAG laser at 1064 nm (220 mW) with a fibre pigtailed DFB diode laser operating at 1560 nm (50 mW) in periodically poled lithium niobate. The idler radiation...
| Hlavní autoři: | , , , , , , , |
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| Médium: | Journal article |
| Jazyk: | English |
| Vydáno: |
2004
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| _version_ | 1826277765100339200 |
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| author | Clark, H Corner, L Denzer, W Hancock, G Hutchinson, A Islam, M Peverall, R Ritchie, G |
| author_facet | Clark, H Corner, L Denzer, W Hancock, G Hutchinson, A Islam, M Peverall, R Ritchie, G |
| author_sort | Clark, H |
| collection | OXFORD |
| description | Continuous wave mid-infrared radiation at 3.36 μm (power ≈ 18 μW) has been produced by difference frequency generation of the fundamental of a YAG laser at 1064 nm (220 mW) with a fibre pigtailed DFB diode laser operating at 1560 nm (50 mW) in periodically poled lithium niobate. The idler radiation has been used to make real-time measurements of ambient methane present in our laboratory using wavelength modulation spectroscopy via the P(4) multiplet transitions within the ν 3 band. We demonstrate a minimum detectable concentration of 47 ppb over a path length of 0.71 m in a 1 s observation time. Measurements of the pressure broadening and shift parameters for these lines are presented for methane in the presence of air, nitrogen and argon. © 2004 Elsevier B.V. All rights reserved. |
| first_indexed | 2024-03-06T23:33:50Z |
| format | Journal article |
| id | oxford-uuid:6cf56abf-1a7b-4ab8-a677-7508dec19304 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T23:33:50Z |
| publishDate | 2004 |
| record_format | dspace |
| spelling | oxford-uuid:6cf56abf-1a7b-4ab8-a677-7508dec193042022-03-26T19:14:36ZDifference frequency generation in periodically poled lithium niobate and its use in the detection of atmospheric methaneJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:6cf56abf-1a7b-4ab8-a677-7508dec19304EnglishSymplectic Elements at Oxford2004Clark, HCorner, LDenzer, WHancock, GHutchinson, AIslam, MPeverall, RRitchie, GContinuous wave mid-infrared radiation at 3.36 μm (power ≈ 18 μW) has been produced by difference frequency generation of the fundamental of a YAG laser at 1064 nm (220 mW) with a fibre pigtailed DFB diode laser operating at 1560 nm (50 mW) in periodically poled lithium niobate. The idler radiation has been used to make real-time measurements of ambient methane present in our laboratory using wavelength modulation spectroscopy via the P(4) multiplet transitions within the ν 3 band. We demonstrate a minimum detectable concentration of 47 ppb over a path length of 0.71 m in a 1 s observation time. Measurements of the pressure broadening and shift parameters for these lines are presented for methane in the presence of air, nitrogen and argon. © 2004 Elsevier B.V. All rights reserved. |
| spellingShingle | Clark, H Corner, L Denzer, W Hancock, G Hutchinson, A Islam, M Peverall, R Ritchie, G Difference frequency generation in periodically poled lithium niobate and its use in the detection of atmospheric methane |
| title | Difference frequency generation in periodically poled lithium niobate and its use in the detection of atmospheric methane |
| title_full | Difference frequency generation in periodically poled lithium niobate and its use in the detection of atmospheric methane |
| title_fullStr | Difference frequency generation in periodically poled lithium niobate and its use in the detection of atmospheric methane |
| title_full_unstemmed | Difference frequency generation in periodically poled lithium niobate and its use in the detection of atmospheric methane |
| title_short | Difference frequency generation in periodically poled lithium niobate and its use in the detection of atmospheric methane |
| title_sort | difference frequency generation in periodically poled lithium niobate and its use in the detection of atmospheric methane |
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