High-power ultra-short laser pulses can propagate through a significant distance in air after self-focusing and filamentation.. Upon self-focusing, the pulse undergoes self-phase modulation turning into a broadband pulse spectrally ranging from the UV to IR, yet of strong spectral coherence, hence a white light laser pulse. Molecules in the filament will be ionized, fragmented and the resulting particles will fluoresce with well resolved molecular spectra without the interference of a plasma continuum even at atmospheric pressure. This talk gives a summary of some of our recent findings on the above mentioned phenomena as well as on ring formation, etc.


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    Title :

    Powerful femtosecond laser pulse propagation in the atmosphere and applications


    Contributors:
    Chin, S.L. (author) / Akozbek, N. (author) / Talebpour, A. (author) / Proulx, A. (author) / Petit, S. (author) / Bowden, C.M. (author)


    Publication date :

    2001-01-01


    Size :

    148303 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English