Propagation of fs TW laser filaments in adverse atmospheric conditions
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- Méchain, G., Méjean, G., Ackermann, R. et al. Appl. Phys. B (2005) 80: 785. doi:10.1007/s00340-005-1825-2
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The propagation of femtosecond terawatt laser pulses at reduced pressure (0.7 atm) is investigated experimentally. In such conditions, the non-linear refractive index n2 is reduced by 30%, resulting in a slightly farther filamentation onset and a reduction of the filament number. However, the filamentation process, especially the filament length, is not qualitatively affected. We also show that drizzle does not prevent the filaments from forming and propagating.