Abstract
The phenomena cause by the third-order nonlinear susceptibility χ(3) (including Raman and electronic parts) which influence intense femtosecond light pulses propagating in transparent isotropic media have been studied theoretically. The derived nonlinear wave equations govern the dynamics of the electric field of a pulse (but not its envelope!) in optical media. The nonlinear equations describe a wide range of nonlinear effects like transient stimulated Raman scattering, impulse stimulated Raman scattering, laser and Raman pumped parametric four-photon interactions, self-phase and cross-phase modulation, and third harmonic generation.1 In the equations, femtosecond laser pulses with constant transverse beam structure are considered (waveguide media in fibers of gas-filled capillaries)2,3
© 1999 Optical Society of America
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