Localization of light energy of a femtosecond laser pulse upon generation of the second harmonic in a one-dimensional nonlinear photonic crystal with alternating nonlinear response

A possibility of localization of the light energy upon generation of the second harmonic of a femtosecond laser pulse in a one-dimensional photonic crystal, some layers of which are either quadratic or cubic nonlinear, is demonstrated in computer simulation. It is shown that there exist light energy localization modes at one of the interacting frequencies and at both interacting frequencies simultaneously. The formation of solitons in separate layers of the photonic crystal is the basis of light energy localization. Logical operations of Boolean algebra can be implemented based on the discovered effect.