Title :
Propagation of femtosecond filaments in air: (3+1) dimensional numerical simulations versus experiments
Author :
Champeaux, Stephanie ; Bergé, Luc ; Gordon, Daniel ; Ting, Antonio ; Penano, Joseph ; Sprangle, Phillip
Author_Institution :
CEA-DIF, Bruyeres-le-Chotel
Abstract :
This study investigates the effect of pulse duration on the pulse dynamics, and focuses on the role of the delayed Kerr contribution. The propagation of both 50 fs and 450 fs experimental pulses is simulated in full (3+1)-dimensional geometry. The standard propagation model governing the evolution of the beam envelope assumes an equal contribution from both instantaneous and Raman-delayed Kerr to the effective nonlinear refractive index.
Keywords :
Raman spectra; high-speed optical techniques; optical Kerr effect; plasma light propagation; plasma simulation; refractive index; (3+1) dimensional numerical simulations; Raman-delayed Kerr; beam envelope evolution; delayed Kerr contribution; femtosecond filaments; filament propagation; nonlinear refractive index; pulse duration effect; pulse dynamics; standard propagation model; Laser theory; Numerical simulation; Optical propagation; Optical pulses; Optimized production technology; Plasma applications; Plasma simulation; Plasma sources; Pulse measurements; Waveguide lasers;
Conference_Titel :
Lasers and Electro-Optics, 2007 and the International Quantum Electronics Conference. CLEOE-IQEC 2007. European Conference on
Conference_Location :
Munich
Print_ISBN :
978-1-4244-0931-0
Electronic_ISBN :
978-1-4244-0931-0
DOI :
10.1109/CLEOE-IQEC.2007.4386866
