RT - Journal Article T1 - Mathematical consideration of Phase-Matching bandwidth, effective nonlinear coefficient and the walk-off effect for LiGa(SexS1-x)2 nonlinear crystals by using Genetic algorithm JF - ijop YR - 2008 JO - ijop VO - 2 IS - 1 UR - http://ijop.ir/article-1-221-en.html SP - 59 EP - 62 K1 - Nonlinear Optics K1 - Phase matching K1 - effective nonlinear coefficient K1 - Walk-off K1 - Genetic Algorithm. AB - In this paper the Phase-Matching bandwidth, effective nonlinear coefficient and the walk-off angle within the effective bandwidth of the LiGa(SexS1-x)2 biaxial nonlinear crystals are calculated using the Genetic algorithm (GA). This calculation is held for all tree principle XY, YZ and XZ planes individually. The results are shown the accuracy of the applied algorithm is quite qualified. LA eng UL http://ijop.ir/article-1-221-en.html M3 ER -