Study of laser induced plasma grating dynamics in gases
Abbreviated Journal Title
Non-linear optics; Filamentation Plasma grating; Ambipolar diffusion; Recombination; FEMTOSECOND FILAMENTATION; AIR FILAMENTS; PULSE; RECOMBINATION; GENERATION; IONIZATION; DISCHARGES; CHANNEL; Optics
The relaxation of a plasma grating resulting from the interference of two crossing laser filaments in molecular and atomic gases is studied experimentally. Dissipation of the grating fringes is dominated by ambipolar diffusion in atomic gases and by a combination of ambipolar diffusion and collision-assisted free electron recombination in molecular gases. A theoretical model of the grating evolution is developed and compared to experimental results. Good agreement with simulations allows extracting plasma properties such as electron density, diffusion and recombination coefficients in Ne, Ar, Kr, Xe, N-2, O-2, CO2 and air at atmospheric pressure. (c) 2013 Elsevier B.V. All rights reserved.
"Study of laser induced plasma grating dynamics in gases" (2014). Faculty Bibliography 2010s. 5508.