Hydroxyl ions in stoichiometric LiNbO3 crystals doped with optical damage resistant ions

被引：16
|
作者：
Kovacs, Laszlo [1 ]
Szaller, Zsuzsanna [1 ]
Lengyel, Krisztian [1 ]
Corradi, Gabor [1 ]
机构：
[1] Hungarian Acad Sci, Wigner Res Ctr Phys, Inst Solid State Phys & Opt, H-1121 Budapest, Hungary
来源：
OPTICAL MATERIALS | 2014年 / 37卷
基金：
匈牙利科学研究基金会;
关键词：
Lithium niobate; Infrared spectra; Hydroxyl ion; Photorefractive damage resistance; INFRARED-ABSORPTION; OH; BAND; THRESHOLD;
D O I：
10.1016/j.optmat.2014.04.043
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The infrared spectra of stoichiometric LiNbO3 crystals containing photorefractive damage resistant ions (e.g. M = Mg, Zn, Sc, In, Hf, Zr or Sn) above their threshold concentration reveal OH- absorption bands absent in undoped crystals. The bands are attributed to stretching vibrations of hydroxyl ions in M-Nb(n+) OH- (n = 2, 3 or 4) type defect complexes. The higher the valency of the dopant ion the lower the observed frequency of the hydroxyl vibration in the complex, and the closer the O-H bond direction to the oxygen plane perpendicular to the crystallographic c axis of the crystal. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：55 / 58
页数：4
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