Abstract
We investigate ultrashort laser pulse filamentation within the framework of spontaneous X Wave formation. After a brief overview of the filamentation process we study the case of an intense filament co-propagating with a weaker seed pulse. The filament is shown to induce strong Cross-Phase-Modulation (XPM) effects on the weak seed pulse: driven by the pump, the seed pulse undergoes pulse splitting with the daughter pulses slaved to their pump counterparts. They undergo strong spatio-temporal reshaping and are transformed into X Waves traveling at the same group velocities as the pump split-off pulses. In the presence of a gain mechanism such as Four-Wave-Mixing or Stimulated Raman Scattering, energy is then transferred from the pump filament leading to amplification of the seed X Wave and formation of a temporally compressed intensity peak.
Original language | English (US) |
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Pages (from-to) | 13077-13095 |
Number of pages | 19 |
Journal | Optics Express |
Volume | 15 |
Issue number | 20 |
DOIs | |
State | Published - Oct 1 2007 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics