【摘要】 从非简谐振子模型出发，通过求解迭代方程，计算出三阶非线性极化率及四阶非线性极化率，并给出了高阶非线性极化率的普适公式更多还原

【Abstract】 Starting from the nonlinear resonance pattern,utilizing the moving equation of nonlinear pattern.Repeated replace equation has been established in order to fit high order repeated replace.We have calculated third order nonlinear polarizability,forth order nonlonear polarizability by solving repeated replace equation.Finally the universal formula of higher order nonlinear polariability has been given.更多还原