calculation of Kerr Nonlinearity of nonlinear optical crystal.it is a 3rd order nonlinear process.

一维非均匀Kerr 介质的子层逆向递推传输矩阵算法, 给出了数值实现方案。此方 法可以方便而精确地模拟非均匀Kerr 介质的传输行为。-Transfer matrix algorithm for one-dimensional inhomogeneous Kerr medium is studied. The method of sub- layer division and backward recursion is put forward.

一维多层光子晶体透射谱图，含有kerr非线性层(The transmission spectrum of one-dimensional multilayer photonic crystal contains Kerr nonlinear layer)