Open AccessA modified rate equation for the propagation of a femtosecond laser pulse in field-ionizing medium
Author(s) -
Chengjun Yu,
Shibing Liu,
Xiao-Fang Shu,
Haiying Song,
Zhi Yang
Publication year - 2013
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.005413
Subject(s) - femtosecond , rate equation , ionization , laser , atomic physics , pulse (music) , optics , materials science , field (mathematics) , ion , physics , classical mechanics , mathematics , quantum mechanics , detector , kinetics , pure mathematics
A recombination rate of electron-ion in the strong-field atomic process is phenomenologically introduced into the ionization rate equation, and therefrom an ionization and recombination rates equation (IRRE) is obtained. By using the extended IRRE, the propagation equation of an intense femtosecond laser pulse in the gaseous medium is re-derived. Some new physical behaviors and characteristics caused by the introduced recombination rate are discussed in detail.