Holographic gratings by spatial modulation of the Curie-Weiss temperature in photorefractive K1-xLixTa1-yNbyO3:Cu,V

被引：20

作者：

Agranat, AJ

Razvag, M

Balberg, M

Bitton, G

机构：

[1] Department of Applied Physics, The Hebrew University of Jerusalem

来源：

PHYSICAL REVIEW B | 1997年 / 55卷 / 19期

关键词：

D O I：

10.1103/PhysRevB.55.12818

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present experimental evidence indicating the formation of metastable dipolar gratings in potassium lithium tantalate niobate at the paraelectric phase. These dipolar gratings result from the formation of local metastable changes in the Curie-Weiss temperature, which, in the presence of an external electric field, induce changes in the low-frequency polarization. The polarization changes create spatially correlated birefringence gratings due to the electro-optic effect. The dipolar gratings are formed in a slow spontaneous process, to compensate for regular photorefractive gratings immediately after the creation of the latter.

引用

页码：12818 / 12821

页数：4

共 9 条

[1] CHARACTERIZATION OF A NEW PHOTOREFRACTIVE MATERIAL - K1-YLYT1-XNX [J].