Femtosecond laser-induced damage and filamentary propagation in fused silica.

  title={Femtosecond laser-induced damage and filamentary propagation in fused silica.},
  author={L. Sudrie and Arnaud Couairon and Michel Franco and B. Lamouroux and Bernard S. Prade and Stylianos Tzortzakis and Andr{\'e} Mysyrowicz},
  journal={Physical review letters},
  volume={89 18},
Bulk damage induced by fs IR laser pulses in silica is investigated both experimentally and numerically. In a strong focusing geometry, a first damage zone is followed by a narrow track with submicron width, indicating a filamentary propagation. The shape and size of the damage tracks are shown to correspond to the zone where the electron density created by optical field ionization and avalanche is close to 10(20) cm(-3). The relative role of avalanche and photoionization is studied. The plasma… 

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