Abstract
Femtosecond laser-induced nonlinear molecular spectroscopy is applied for sensing atmospheric greenhouse gas methane (CH4). The high intensity inside the Ti-sapphire femtosecond laser filaments can dissociate the CH4 molecules into small fragments which emit characteristic fluorescence. Backward CH radical fluorescence is used to quantitatively analyze the pollutant concentration and its remote detection limit.
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42.68.Wt; 42.65.Jx; 95.75.Fg
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Xu, H., Daigle, J., Luo, Q. et al. Femtosecond laser-induced nonlinear spectroscopy for remote sensing of methane. Appl. Phys. B 82, 655–658 (2006). https://doi.org/10.1007/s00340-005-2123-8
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DOI: https://doi.org/10.1007/s00340-005-2123-8