3D Images of Inverted Domain Structure in LiNbO3 using SHG Interference Microscope
3D Images of Inverted Domain Structure in LiNbO3 using SHG Interference Microscope
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DOI：
10.1080/00150190490457618
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发表时间：
2004-01
期刊：
影响因子：
0.8
通讯作者：
Y. Uesu;H. Shibata;S. Suzuki;S. Shimada
中科院分区：
文献类型：
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作者：
Y. Uesu;H. Shibata;S. Suzuki;S. Shimada
提出了一种利用二次谐波显微镜对铁电体180度电畴结构进行三维可视化的新方法。该想法的基本部分是使用具有4个相位差的2D图像，即，0、π/2、-π/2和π，在样品和均匀SHG板中产生的SH波之间。在连续施加6 kV/mm脉冲电场的条件下，MgO：LiNbO 3晶体中出现了反转畴结构：反转畴结构沿样品的轴向（y）和横向（z）均呈沿着楔形生长。
A novel method of 3D visualization of 180-degree domain structures in ferroelectrics is proposed using the second harmonic generation (SHG) microscope. The essential part of the idea is to use 2D images with 4 phase differences, i.e., 0, π/2, −π/2 and π, between SH waves generated in a sample and a homogeneous SHG plate. Inverted domain structures in MgO:LiNbO 3 were successfully obtained: they grow in a wedge-like form both along the axial (y) and the lateral (z) directions of the sample under successive applications of pulsed electric field of 6 kV/mm.