Photorefractive effects in periodically poled ferroelectrics.
Photorefractive effects in periodically poled ferroelectrics.
复制标题
周期性极化铁电体中的光折变效应。
DOI：
10.1364/ol.21.000857
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发表时间：
1996
期刊：
影响因子：
3.6
通讯作者：
M. Fejer
中科院分区：
文献类型：
--
作者：
M. Taya;M. C. Bashaw;M. Fejer
定量分析了周期性极化铁电体在给定光辐照度分布下的稳态光折射率扰动。与均匀极化晶体相比，由光电效应引起的轴向不变折射率扰动约为偏振光栅波矢量（K(g)）与辐照度的特征横向维积的平方。这一结果与经验观察相一致，周期性极化的LiNbO(3)具有更高的抗光折变损伤性。
A quantitative analysis of the steady-state photorefractive index perturbations caused by a given optical irradiance distribution in a periodically poled ferroelectric is presented. Axially invariant index perturbations that are due to the photogalvanic effect are reduced compared with those in a homogeneously poled crystal by approximately the square of the product of the poling-grating wave vector (K(g)) and a characteristic transverse dimension of the irradiance. This result is consistent with empirical observations in periodically poled LiNbO(3) of much higher resistance to photorefractive damage.