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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

Yb:KGd(WO4)2激光晶体结构与振动光谱

王英伟1, 程灏波2, 朱忠丽3, 李建利3, 刘景和3   

  1. 1. 北京科技大学材料科学与工程学院, 北京 100083; 2. 北京理工大学信息技术学院, 北京 100081; 3. 长春理工大学材料与化工学院, 长春 130022
  • 收稿日期:2004-10-19 修回日期:2004-12-06 出版日期:2005-11-20 网络出版日期:2005-11-20

Structure and Vibration Spectrum of Laser Crystal Yb:KGd(WO4)2

WANG Ying-Wei1, CHENG Hao-Bo2, ZHU Zhong-Li3, LI Jian-Li3, LIU Jing-He3   

  1. 1. University of Science and Technology Beijing, Beijing 100083, China; 2. Beijing Institute of Technology, Beijing 100081, China;
    3. Changchun University of Science and Technology, Changchun 130022, China
  • Received:2004-10-19 Revised:2004-12-06 Published:2005-11-20 Online:2005-11-20

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摘要： 用顶部籽晶提拉法, 以K2W2O7为助溶剂, 生长Yb:KGd(WO4)2激光晶体. 经热重-差热分析, 确定晶体熔点为1086℃, 相变温度为1021℃. 晶体结构分析确定Yb:KGW(WO4)2晶体由WO6八面体连接而成, WO6八面体是由(WOOW)双氧桥及(WOW)单氧桥构成. 晶体粉末样品室温下的红外及拉曼光谱测试, 确定WO42-、双氧桥及单氧桥的振动范围, 并对其进行了归属. X射线粉末衍射测试, 验证所生长的晶体为β-Yb:KGd(WO4)2.

关键词: 晶体生长, 晶体结构, 拉曼光谱, 红外光谱

Abstract: The selection of the flux and the design of the proper processes are the key factor for the growth of Yb:KGd(WO4)2 laser crystal. Yb:KGd(WO4)2 crystal was grown by the Top
Seeded Solvent Growth (TSSG) method using K2W2O7 as a suitable flux. On the base of TG-DTA, the crystal has two obvious absorption peaks at
1086℃ and 1021℃, its melting point is 1086℃, phase transition temperature from tetragonal to monoclinic is 1021℃. The Yb:KGd(WO4)2
crystal consists of WO6 octahedra which consists of WOOW double oxygen bridges and WOW single bridges. IR and Raman spectra show the atom
group WO42- flex vibration at 436 cm-1 and atom group WO42- bend vibration at 740～925cm-1, WOOW double oxygen bridge vibration at 903, 765, 684, 438, 498 and 297cm-1, WOW single
bridges vibration at 808, 526 and 232cm-1. Analyzing on the X-ray diffraction spectrum of Yb:KGd(WO4)2 crystal powder sample, we can
conclude that the β-Yb:KGd(WO4)2 crystal is of a monoclinic system, and C2/c space group.

Key words: crystal growth, structure of crystal, Raman spectrum, IR spectrumk

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