ON THE THIRD ORDER OPTICAL NONLINEARITY NEAR EXCITON LINES
关于激子谱线近傍的三阶非线性光学系数

In this paper, a theoretical method is presented to calculate the third order optical susceptibility which is induced by the saturation effect of light absorption near exeiton lines. In particular, the numerical results of the nonlinear susceptibility are given in both exeiton lines of GaAs and exeiton lines of the yellow series of Cu2O.