Spatio-temporal reshaping and X Wave dynamics in optical filaments

被引：76
作者：
Faccio, D.
Averchi, A.
Couairon, A.
Kolesik, M.
Moloney, J. V.
Dubietis, A.
Tamosauskas, G.
Polesana, P.
Piskarskas, A.
Di Trapani, P.
机构：
[1] Univ Insubria, CNISM, Dept Math & Phys, IT-22100 Como, Italy
[2] Ecole Polytech, CNRS, Ctr Phys Theor, F-91128 Palaiseau, France
[3] Univ Arizona, Ctr Opt Sci, Arizona Ctr Math Sci, Tucson, AZ 85721 USA
[4] Vilnius State Univ, Dept Quantum Elect, LT-10222 Vilnius, Lithuania
来源：
OPTICS EXPRESS | 2007年 / 15卷 / 20期
关键词：
D O I：
10.1364/OE.15.013077
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
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. (C) 2007 Optical Society of America.
引用
收藏
页码：13077 / 13095
页数：19
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