Second-harmonic imaging of ferroelectric domain walls

被引：66
|
作者：
Bozhevolnyi, SI [1 ]
Hvam, JM
Pedersen, K
Laurell, F
Karlsson, H
Skettrup, T
Belmonte, M
机构：
[1] Tech Univ Denmark, Mikroelekt Ctr, DK-2800 Lyngby, Denmark
[2] Aalborg Univ, Inst Phys, DK-9220 Aalborg, Denmark
[3] Royal Inst Technol, Dept Phys, S-10044 Stockholm, Sweden
[4] Inst Opt Res, S-10044 Stockholm, Sweden
[5] Tech Univ Denmark, Dept Phys, DK-2800 Lyngby, Denmark
来源：
APPLIED PHYSICS LETTERS | 1998年 / 73卷 / 13期
关键词：
D O I：
10.1063/1.122291
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Domain walls in periodically poled ferroelectric KTiOPO4 and LiNbO3 crystals are observed by making use of second-harmonic (SH) generation enhancement in the transition regions between neighboring domains. SH images of domain walls obtained with various samples for different polarization configurations are presented. The SH generation enhancement is found especially pronounced for the polarization of the SH radiation being perpendicular to the domain walls. The origin and selection rules for the contrast in SH images of domain walls are discussed. The results obtained suggest that the domain walls produce a deteriorating effect on SH generation by quasiphase matching. (C) 1998 American Institute of Physics. [S0003-6951(98)02039-7].
引用
收藏
页码：1814 / 1816
页数：3
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