Towards real-time active imaging of greenhouse gases using tunable mid-infrared all-fiber lasers

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 gra...

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Veröffentlicht in:Applied optics (2004) 2023-08, Vol.62 (23), p.G69-G76
Hauptverfasser: Michaud, Louis-Charles, Boilard, Tommy, Magnan-Saucier, Sébastien, Paradis, Pascal, Talbot, Lauris, Thiboult, Antoine, Nadeau, Daniel F., Vallée, Réal, Bernier, Martin
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Sprache:eng
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Zusammenfassung: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.
ISSN:1559-128X
2155-3165
1539-4522
DOI:10.1364/AO.486929