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.
玻璃中的金属纳米粒子由于其表面等离子共振，在特征峰附近会出现明显的光学非线性现象。
The optical nonlinear phenomena could be observed obviously around the absorption peak, due to the surface plasmon resonance.
双光子共振增强了碱金属原子的非线性极化率，可以观测到多种非线性光学过程产生的非线性光谱。
The nonlinear spectroscopy created by many kind of optical processes are observed while two-photon resonance enhanced the atomic nonlinear susceptibility.
双光子共振增强了碱金属原子的非线性极化率，可以观测到多种非线性光学过程产生的非线性光谱。
The nonlinear spectroscopy created by many kind of optical processes are observed while two-photon resonance enhanced the atomic nonlinear susceptibility.
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