The frequency doubling process resulting from the nonlinear interaction of ultrashort laser pulses in nonlinear photonic crystals modulated with second-order nonlinear admittance was studied based on numerical modeling. The effects of linear absorption in the infrared spectral range and third-order...

The process of optical parametric amplification of short laser pulses in nonlinear photonic crystals under conditions of nonstationarity and self-action is analyzed numerically. The process was analyzed taking into account the dispersion of the medium up to the third order and nonlinear...