Abstract
A comprehensive resume on the soliton solutions obtained by studying the Raman Effect on nonlinear propagation of optical pulses is presented. Additionally, we show the powerful method for studying the complex nonlinear differential equation that describes the Raman waves, by means of the mechanical analogy method.
Highlights
As is well known, when a monochromatic radiation with determined frequency w1 insides on optical active media most of it is transmitted without any change but some scattering of the radiation could occur.In the scattered radiation there will be observed the frequency w1 associated to the incident radiation and pairs of new frequencies like w 1 w rThe scattering without change of frequencies is calledRayleigh scattering and that scattering that occurs with changed frequencies is named Raman scattering or Raman effect.In synthesis it could be said that Raman scattering is the inelastic scattering of light
We show the powerful method for studying the complex nonlinear differential equation that describes the Raman waves, by means of the mechanical analogy method
This saturation effect occurs because the continuous Stokes shift of the soliton frequency becomes impossible, and the energy is transferred to the region of the positive group-velocity dispersion, which is forbidden for the soliton (Serkin, V.N. et. 2003b)
Summary
As is well known, when a monochromatic radiation with determined frequency w1 insides on optical active media most of it is transmitted without any change but some scattering of the radiation could occur. Stimulated Raman scattering (SRS) of high energy Laser pulse when insides in two-level medium has been intensively studied these by many authors , for example see review (Raymer & Walmsley, 1991). Intense works was dedicated to the non-stationary interaction of ultrashort pulses of light with matter This was done in the process of interaction of two photons in the inelastic scattering of excitation in crystals (Karasik & Chunaev, 2007). This mentioned paper studied the coherence properties of non stationary stimulated Raman radiation in a crystal in the presence of amplification of spontaneous noise and intense, broadband radiation. Some discussion issues are displayed in the final section
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