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.
Powerful femtosecond laser pulse propagation in the atmosphere and applications
01.01.2001
148303 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Powerful Femtosecond Laser Pulse Propagation in the Atmosphere and Applications
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