Title :
The effect of long timescale gas dynamics on femtosecond filamentation
Author :
Cheng, Yu-Heng ; Wahlstrand, J.K. ; Jhajj, N. ; Milchberg, H.M.
Author_Institution :
Inst. for Res. in Electron. & Appl. Phys., Univ. of Maryland, College Park, MD, USA
Abstract :
We show that a localized and long-lived quasi-stationary gas density depression exists after filament-generated-plasma recombination. Its millisecond timescale dynamics is governed by thermal diffusion and has strong effects on high-repetition-rate filamentation and supercontinuum generation.
Keywords :
plasma density; plasma light propagation; plasma transport processes; supercontinuum generation; thermal diffusion; femtosecond filamentation; filament-generated-plasma recombination; high-repetition-rate filamentation; localized quasistationary gas density depression; long timescale gas dynamics; long-lived quasistationary gas density depression; millisecond timescale dynamics; supercontinuum generation; thermal diffusion; Gas lasers; Hydrodynamics; Laser beams; Laser excitation; Lenses; Measurement by laser beam; Plasmas;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2013 Conference on
Conference_Location :
San Jose, CA
