Towards real-time active imaging of greenhouse gases using tunable mid-infrared all-fiber lasers
| Autor: | Louis-Charles Michaud, Tommy Boilard, Sébastien Magnan-Saucier, Pascal Paradis, Lauris Talbot, Antoine Thiboult, Daniel F. Nadeau, Réal Vallée, Martin Bernier |
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| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Applied Optics. 62:G69 |
| ISSN: | 2155-3165 1559-128X |
| Popis: | We report a tunable all-fiber laser emitting a maximum output power of 2.55 W around 3240 nm. The fiber laser cavity based on a fluoride fiber doped with dysprosium ions yields an efficiency of 42% according to the in-band launched pump power at 2825 nm. Due to a custom piezoelectric fiber Bragg grating (FBG) package, mechanical strains applied to the narrowband FBG used as the input cavity coupler allowed for fast tuning of the emission wavelength over a spectral range of 1.5 nm. This laser was deployed in the field in northern Québec (Canada) to assess its performances for remote sensing of methane in the presence of a significant amount of water vapor, i.e., over a hydroelectric reservoir. The preliminary results acquired during this field campaign confirm the great potential of the proposed approach for the development of a real-time active imaging system of greenhouse gases. |
| Databáze: | OpenAIRE |
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