采用飞秒激光，运用简并四波混频法，研究了化合物在非共振状态下的三阶非线性光学性能。
By using femtosecond laser, the off-resonant third-order optical nonlinearity of the compound was measured with degenerate four-wave mixing technique.
电子共振增强有利于提高三阶非线性光学系数。
It was confirmed that the resonant of electron could enhance the third-order nonlinear optical coefficient greatly.
将光学非线性介质引入到多层膜结构中，讨论光学非线性对表面等离子体共振角谱的影响。
We introduce optical nonlinear medium to multi-layers structure and discuss the influence of optical non-linearity on surface plasmon resonance.
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