一种新的非线性光学现象——Cascaded二级非线性光学效应

A new kind of nonlinear optical phenomena ——Cascaded second-order nonlinear optical effect

从Maxwell方程组出发 ,研究了一种新的非线性光学效应———Cascaded二级非线性现象 ,推导了依赖于光强的折射率变化———类克尔效应 ,分析了Cascaded非线性系数依赖于基波波长及波矢失配的变化规律

Based on Maxwell equations, a new kind of nonlinear optical phenomena—Cascaded second-order nonlinear optical effect has been studied. The dependence of refractive index change on intensity, i.e., Kerr-type effect has been deduced. The relationships between Cascaded nonlinear coefficient and fundamental wavelength as well as vector mismatch have also been studied. The idea that Cascaed second-order nonlinear effect can be produced in superlattice material has been given.