期刊
JOURNAL OF SCIENTIFIC COMPUTING
卷 44, 期 2, 页码 170-190出版社
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10915-010-9375-0
关键词
Nonlinear optics; Modeling multiphoton ionization; Ultrashort laser pulses; Plasma physics
In this paper, we present a model for propagation of intense and ultrashort laser pulses ionizing dielectrics. We consider early ionization so that this process is sufficiently weak to avoid requiring a complete description of the ionization process (e.g. the use of kinetic equations which are very expensive from a computational point of view). As the intensity of the field is small, one photon ionization is neglected. Ionization may only occur through multi-photonic and collisional ionization. The conduction band is discretized and multiple-rate equations are written for electron densities. The wave-field evolves through Maxwell equations.
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