Applied Physics B

, Volume 82, Issue 4, pp 655–658

Femtosecond laser-induced nonlinear spectroscopy for remote sensing of methane


DOI: 10.1007/s00340-005-2123-8

Cite this article as:
Xu, H., Daigle, J., Luo, Q. et al. Appl. Phys. B (2006) 82: 655. doi:10.1007/s00340-005-2123-8


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.

Copyright information

© Springer-Verlag 2005

Authors and Affiliations

  1. 1.Center d’Optique, Photonique et Laser (COPL) et Département de Physique, de Génie Physique et d’OptiqueUniversité LavalQuébecCanada