非线性光学效应nonlinear optical effect指由电磁辐射 所产生，但其响应却与照度不成比例的一种现象。光化学中 重要的非线性光学效应有谐频发生、激光、拉曼位移等。
苯基脲具有很强的二阶非线性光学效应，其粉末二次谐波产生效率为尿素的11倍；
A primary study was carried out and the results revealed that phenylurea had fairly strong nonlinearity, its powder second harmonic generation efficiency was 11 times larger than that of urea.
利用极化反转特性的铁电存贮器件以及非线性光学效应和电光效应已部分得到应用。
The ferroelectric memory devices utilizing the property of polarization reverse, nonlinear optic devices and electron optic devices had been applied in some case.
荧光强度与激发光强度的三次方关系表明，有效的荧光产生起源于三阶非线性光学效应的增强。
The intensity dependence of integrated luminescence on pump power shows that this is a third-order nonlinear optical effect.
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