Spectral study of resonance absorption upon three-wave mixing of femtosecond pulses in nonlinear crystals

The shortened equations are obtained for the spectral components of parametrically interacting pulses in nonlinear-optical crystals, which take into account the dispersion of all the parameters of the medium. The range of applicability of the model is indicated. The effect of resonance absorption on the characteristics of femtosecond pulses is considered.