Analysis of harmonic’s generation in susceptibility gratings

The analysis of the summary investigation results of a nonlinear process of generation of the laser frequency harmonic on the second-order susceptibility gratings photo-integrated in different consisted glass materials are presented. The basic attention is concentrated on the results of study of the properties of the frequency harmonic generation in oxide materials with the variations of the concentrations of the lead-oxide, the some elements of the first-five groups and the rare-earth elements. The influence of the variations of the chemical components on the formation of the photo-integrated second-order susceptibility gratings in investigated samples and also on the process of the frequency harmonic generation is analyzed.