Optical feedback cavity-enhanced absorption spectroscopy (OF-CEAS) in a ring cavity
Optical feedback cavity-enhanced absorption spectroscopy (OF-CEAS) has been demonstrated by coupling a distributed feedback diode laser to a ring cavity. Frequency-selected light decaying from the ring cavity is retro-reflected, inducing a counter-propagating intra-cavity beam, and providing optical...
| Main Authors: | , , , , |
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| Format: | Conference item |
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2010
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| _version_ | 1826266598434930688 |
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| author | Hamilton, D Nix, M Baran, S Hancock, G Orr-Ewing, A |
| author_facet | Hamilton, D Nix, M Baran, S Hancock, G Orr-Ewing, A |
| author_sort | Hamilton, D |
| collection | OXFORD |
| description | Optical feedback cavity-enhanced absorption spectroscopy (OF-CEAS) has been demonstrated by coupling a distributed feedback diode laser to a ring cavity. Frequency-selected light decaying from the ring cavity is retro-reflected, inducing a counter-propagating intra-cavity beam, and providing optical feedback to the laser. At specific laser-to-cavity distances, all cavity mode frequencies return to the diode laser with the same phase, allowing spectra to be accumulated across the range of frequencies of the current-tuned laser. OF-CEAS has been used to measure very weak oxygen isotopologue ( 16O 18O and 16O 17O) absorptions in ambient air at wavelengths near 762 nm using the electric-dipole forbidden O 2 A-band. A bandwidth reduced minimum detectable absorption coefficient of 2.2 × 10 -9 cm -1 Hz -1/2 is demonstrated. © Springer-Verlag 2009. |
| first_indexed | 2024-03-06T20:41:23Z |
| format | Conference item |
| id | oxford-uuid:3466c091-70e6-4063-9399-15244e7c97ab |
| institution | University of Oxford |
| last_indexed | 2024-03-06T20:41:23Z |
| publishDate | 2010 |
| record_format | dspace |
| spelling | oxford-uuid:3466c091-70e6-4063-9399-15244e7c97ab2022-03-26T13:25:47ZOptical feedback cavity-enhanced absorption spectroscopy (OF-CEAS) in a ring cavityConference itemhttp://purl.org/coar/resource_type/c_5794uuid:3466c091-70e6-4063-9399-15244e7c97abSymplectic Elements at Oxford2010Hamilton, DNix, MBaran, SHancock, GOrr-Ewing, AOptical feedback cavity-enhanced absorption spectroscopy (OF-CEAS) has been demonstrated by coupling a distributed feedback diode laser to a ring cavity. Frequency-selected light decaying from the ring cavity is retro-reflected, inducing a counter-propagating intra-cavity beam, and providing optical feedback to the laser. At specific laser-to-cavity distances, all cavity mode frequencies return to the diode laser with the same phase, allowing spectra to be accumulated across the range of frequencies of the current-tuned laser. OF-CEAS has been used to measure very weak oxygen isotopologue ( 16O 18O and 16O 17O) absorptions in ambient air at wavelengths near 762 nm using the electric-dipole forbidden O 2 A-band. A bandwidth reduced minimum detectable absorption coefficient of 2.2 × 10 -9 cm -1 Hz -1/2 is demonstrated. © Springer-Verlag 2009. |
| spellingShingle | Hamilton, D Nix, M Baran, S Hancock, G Orr-Ewing, A Optical feedback cavity-enhanced absorption spectroscopy (OF-CEAS) in a ring cavity |
| title | Optical feedback cavity-enhanced absorption spectroscopy (OF-CEAS) in a ring cavity |
| title_full | Optical feedback cavity-enhanced absorption spectroscopy (OF-CEAS) in a ring cavity |
| title_fullStr | Optical feedback cavity-enhanced absorption spectroscopy (OF-CEAS) in a ring cavity |
| title_full_unstemmed | Optical feedback cavity-enhanced absorption spectroscopy (OF-CEAS) in a ring cavity |
| title_short | Optical feedback cavity-enhanced absorption spectroscopy (OF-CEAS) in a ring cavity |
| title_sort | optical feedback cavity enhanced absorption spectroscopy of ceas in a ring cavity |
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