Femtosecond filamentation induced fluorescence technique for atmospheric sensing |
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| Authors: | Yuan Shuai;Chin See Leang;Zeng He-Ping |
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| Institution: | Yuan Shuai;Chin See Leang;Zeng He-Ping;Shanghai Key Laboratory of Modern Optical System,Engineering Research Center of Optical Instrument and System,Ministry of Education,School of Optical-Electrical and Computer Engineering,University of Shanghai for Science and Technology;State Key Laboratory of Precision Spectroscopy, East China Normal University;Centre d’Optique, Photonique et Laser (COPL) and Departement de Physique, de Genie Physique et d’Optique,Universite Laval, Quebec, Quebec G1V 0A6, Canada; |
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| Abstract: | Recent progress in filament-induced atmospheric sensing is reviewed.Self-guided propagation of ultrashort laser pulses in air induces laser filamentation.All molecules in the path of a filament can be dissociated into highly excited fragments,resulting in emission of characteristic fluorescence spectra.The fluorescence spectra provide information about the various molecules in the filaments.By using a filament-induced"fingerprinting"fluorescence technique,molecules in the atmosphere can be identified. |
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| Keywords: | femtosecond laser filamentation remote sensing |
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