Abstract
We report self-guided propagation of ultrashort IR laser pulses in fused silica over several Rayleigh lengths. Self-guiding is accompanied by pulse splitting and time compression. Numerical simulations involving pulse self-focusing, temporal dispersion, and multiphoton ionization are found to be in good agreement with the experimental results. They show that a quasidynamic equilibrium between multiphoton ionization and self-focusing drives the filamentation process, while temporal dispersion plays a negligible role.
| Original language | English |
|---|---|
| Pages (from-to) | 213902-1-213902-4 |
| Journal | Physical Review Letters |
| Volume | 87 |
| Issue number | 21 |
| DOIs | |
| Publication status | Published - 19 Nov 2001 |
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