TY - JOUR
T1 - Effects of delayed Kerr nonlinearity and ionozation on the filamentary ultra-short laser pulses in air
AU - Nurhuda, M.
AU - van Groesen, E.
PY - 2005
Y1 - 2005
N2 - We present a systematic study of filamentary ultrashort laser pulses in air, through numerical solutions of the nonlinear Schrödinger equation for various contributions of the delayed Kerr nonlinearity. The results show that a relatively larger contribution of the delayed Kerr nonlinearity will lead to a longer stable filament. This is explained from the transfer of the nonlinear contributions from the frontier part to the back of the pulse and the counterbalanced action of the negative plasma induced nonlinearity by the delayed Kerr nonlinearity in the trailing part of the pulses. Furthermore, effect of ionization on the stability of the filament is investigated. Two formulas are used to generate the data of the ionization, i.e., the Perelemov, Popov, and Terent'ev (PPT) and the Ammosov, Delone, and Krainov formula. It is found that simulation with higher ionization rate (PPT) could generate a more stable and longer filament.
AB - We present a systematic study of filamentary ultrashort laser pulses in air, through numerical solutions of the nonlinear Schrödinger equation for various contributions of the delayed Kerr nonlinearity. The results show that a relatively larger contribution of the delayed Kerr nonlinearity will lead to a longer stable filament. This is explained from the transfer of the nonlinear contributions from the frontier part to the back of the pulse and the counterbalanced action of the negative plasma induced nonlinearity by the delayed Kerr nonlinearity in the trailing part of the pulses. Furthermore, effect of ionization on the stability of the filament is investigated. Two formulas are used to generate the data of the ionization, i.e., the Perelemov, Popov, and Terent'ev (PPT) and the Ammosov, Delone, and Krainov formula. It is found that simulation with higher ionization rate (PPT) could generate a more stable and longer filament.
KW - IR-53377
KW - METIS-226024
U2 - 10.1103/PhysRevE.71.066502
DO - 10.1103/PhysRevE.71.066502
M3 - Article
SN - 1063-651X
VL - 71
JO - Physical review E: Statistical physics, plasmas, fluids, and related interdisciplinary topics
JF - Physical review E: Statistical physics, plasmas, fluids, and related interdisciplinary topics
IS - 6
M1 - 066502
ER -