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Filamentation d'impulsions laser ultrabrèves : physique et applications

Filamentation d'impulsions laser ultrabrèves : physique et applications

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Profil d’intensité<br />

Propagation autoguidée <br />

d’impulsions <strong>laser</strong> fs : filamentation<br />

«lentille» de Kerr : n = n 0 + n 2 I(r)<br />

plasma; -n 4I 2 +n 6I 3 -n 8I 4<br />

Filament : Φ = 100 μm, L > 100 m, I = 10 14 W/cm 2 , ρ = 10 15 cm -3<br />

Haute énergie : filamentation multiple<br />

Long canal de plasma, continu

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