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无机材料学报

无机材料学报

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熔盐提拉法生长的Nd3+:KGd(WO4)2单晶的性能研究

涂朝阳1; 李坚富1; 游振宇1; 朱昭捷1; 吴柏昌1; 罗涛2; 赖洪章2   

  1. 1. 中科院福建物质结构研究所, 福州 350002; 2. 江苏扬州曙光光电有限责任公司, 扬州 225000
  • 收稿日期:2003-04-28 修回日期:2003-06-13 出版日期:2004-05-20 网络出版日期:2004-05-20

Modified CZ. Growth and the Properties of Nd3+:KGd(WO4)2 Crystal

TU Chao-Yang1; LI Jian-Fu1; YOU Zheng-Yu1; ZHU Zhao-Jie1; WU Bai-Chang1; LUO TaO2; LAI Hong-Zhang2   

  1. 1.Fujian Institute of Research on the Structure of Matter; Chinese Academy of Sciences; Fuzhou 350002; China; 2. Shu Guang Limited Liability Company of Photoelectron; Yangzhou 225000; China
  • Received:2003-04-28 Revised:2003-06-13 Published:2004-05-20 Online:2004-05-20

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摘要： 采用熔盐提拉法生长出φ20min×35mm的优质Nd3+:KGd(WO4)2晶体,对晶体三个轴向的光谱进行了测试研究,结果表明a轴向的吸收和荧光谱峰最强,最适合于进行激光实验研究.采用脉冲氙灯泵浦φ3.5mm×26mm的激光器件,在1.067μm处得到125.5mJ的激光输出.在同等条件下对YAG:Nd激光晶体进行了激光实验研究,并对两种结果进行了比较,结果表明:和YAG:Nd3+晶体相比,KGW:Nd3+晶体具有激光阈值低、效率高和输出光为偏振光等优点,因此在小型激光器的应用方面具有明显的优势.

Abstract: The crystal of Nd3+:KGd(WO4)2 with the size of φ20mm×35mm was grown by using the modified CZ.
method. The absorption and emission spectra in the directions of a, b and c axes were measured, the result shows that the intensity of absorption
and emission spectra in the direction of a axis is the strongest. Therefore, the direction of a axis is the most suitable for laser experiment. A laser
output of 125.5 mJ at 1.067μm was obtained when a laser crystal with the size of φ3.5mm×26mm was pumped by a Xe lamp. Compared with the
YAG:Nd3+ laser crystal, which was performed the same laser experiment at the same conditions, Nd3+:KGd(WO4)2 has the advantages of lower
laser threshold and higher efficiency as well as the polarized laser output. Therefore, it is expected that Nd3+:KGd(WO4)2 crystal will be very
useful in the miniature laser.

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