Abstract. In the present work the dynamics of femtosecond pulses (FS) in a nonlinear dispersive media has been reviewed. The nonlinear Schröodinger equation (NSE) very well describes the propagation of the slowly varying amplitude function of envelope of nano- and picosecond pulses. However, when we examine the evolution of short optical pulses, of the order of 100 fs or less, it is necessary to use the more general nonlinear amplitude equation. In this equation effects of linear dispersion up to third order and dispersion of nonlinearity are included. In our work we ignore losses and Raman scattering of the medium.

Full-text: PDF