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无机材料学报

无机材料学报

• 研究论文 • 上一篇    下一篇

掺镁近化学计量比LiNbO3晶体的生长

王海丽1; 杭寅1; 张连瀚1; 祝世宁2; 徐军1   

  1. 1. 中国科学院上海光学精密机械研究所, 上海 201800; 2. 南京大学固体微结构国家重点实验室, 南京 210093
  • 收稿日期:2003-09-15 修回日期:2003-10-22 出版日期:2004-09-20 网络出版日期:2004-09-20

Growth of Mg-doped Near Stoichiometric LiNbO3 Crystal

WANG Hai-Li1; HANG Yin1; ZHANG Lian-Han1; ZHU Shi-Ning2; XU Jun1   

  1. 1.Shanghai Institute of Optics and Fine Mechanics; Chinese Academy of Sciences; Shanghai 201800; China; 2.State Key Laboratory of Solid Microstructures; Nanjing University; Nanjing 210093; China
  • Received:2003-09-15 Revised:2003-10-22 Published:2004-09-20 Online:2004-09-20

PDF (PC)

2005

摘要： 利用提拉法,从掺入11mol％K2O和1mol％MgO的化学配比LiNbO3熔体中生长了高质量的掺镁近化学计量比LiNbO3晶体.与同成分LiNbO3晶体相比,紫外吸收边发生明显蓝移,OH-红外吸收峰的位置和波形也发生了显著的变化,初步断定晶体中Mg2+的掺杂浓度已达到抗光伤阈值浓度.酸腐蚀结果表明,晶体具有区域性单畴结构.

关键词: LiNbO3晶体, 近化学计量比, 吸收光谱, 畴结构

Abstract: A kind of Mg-doped near stoichiometric LiNbO3 crystal was grown with Czochralski method from
a stoichiometric melt with addition of 11mol% K2O and 1mol% MgO. Compared with congruent LiNbO3 crystal, its ultraviolet absorption
edge shifts towards short wavelength and the location and shape of the OH- infrared absorption band also change distinctly, so that the Mg2+
doping concentration can be considered as having reached the optical damage resistant threshold concentration. Acid etching result shows that the
crystal has regional single domain structure.

Key words: LiNbO3 crystal, near stoichiometric, absorption spectra, domain structure

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