Secondhyphen;order cascading in thirdhyphen;order nonlinear optical processes

摘要

Because cascaded secondhyphen;order processes make substantial qualitative and quanitative differences to the results of thirdhyphen;order nonlinear optical experiments, a formalism for their treatment is presented. The symmetry dictates concerning the occurrence and relationships of magnitudes of cascading are tabulated for the higher symmetry crystal classes. Angular momentum considerations are applied to the situations allowing circularly polarized light waves.