Nonlinear optical effects in crystals of langasite family

Abstract

A calculation technique based on the Dipole Electron Shifting model is applied to investigate the nonlinear optical properties of the crystals of langasite family. The d 11 component of nonlinear optical susceptibility tensors is determined for La 3 Ga 5 SiO 14 , Ca 3 Ga 2 Ge 4 O 14 , La 3 Ga 5 . 5 Ta 0 . 5 O 14 La 3 Ga 5 . 5 Nb 0 . 5 O 14 crystals. The results of the calculations are compared with the experimental ones, described in literature.