Third-ordersusceptibility has been determined by the ratio of the input probing beam in tensity to the backward wave intensity in four-wave mixing.
通过测量后向反射波与入射波的强度比，可以确定介质的三阶极化率。
2
It has been established that thirdorder NLO susceptibility of binary oxide glasses increases with decreasing optical electronegativity.
已确定的三阶非线性光学易感性的二元氧化物玻璃的增加与减少光学电。
3
The electronic structure, UV-visible spectrum, nonlinear third-order optical susceptibility and its dispersion of zinc phthalocyanine(ZnPc)were studied by using INDO/SDCI method.