Abstract
We used both the backscattered nitrogen fluorescence signal (BSF) and ICCD fluorescence side imaging methods to study the filament light intensity with a 4 J/60 fs Ti:sapphire laser beam. It has been concluded that even the laser power is increased by 100 times in our experiment the peak laser intensity in the filament only has a little change. We attribute this phenomenon to the result of intensity clamping and the competition of multiple filaments.
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Ji, Z.G., Liu, J.S., Wang, Z.X. et al. Femtosecond laser filamentation with a 4 J/60 fs Ti:Sapphire laser beam: Multiple filaments and intensity clamping. Laser Phys. 20, 886–890 (2010). https://doi.org/10.1134/S1054660X10070145
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DOI: https://doi.org/10.1134/S1054660X10070145