提拉法生长的Nd:GSGG是性能优良的激光晶体,在固体强激光领域有重要的运用前景.采用液相共沉淀法制备了GSGG的前驱物,将前驱物在较低的温度下烧结,获得了GSGG多晶原料,用提拉法生长了无散射、气泡、云层、无开裂的φ2626mm×45 mm的含钪石榴石Nd:GSGG晶体.用X射线衍射对GSGG的共沉淀前驱物在不同烧结温度下的相变情况进行了研究,表明在900℃烧结温度下,GSGG前驱物即可反应形成GSGG多晶,这比固相法合成GSGG料的反应温度低了200℃.同时,用X射线衍射对GSGG多晶、Nd:GSGG单晶的结构进行了研究,采用最小二乘法,以f(θ)=sin θ-sin1-Tθ(T=20)为外推函数,计算了GSGG多晶和Nd:GGG单晶的晶格参数,分别为1.257547 nm、1.256163 nm.它们之间的晶格参数差异可能是由于Ga组分的不同所引起的.
参考文献
[1] | Kaminskii A A, Kh. Bagdasarov S, et al. Luminescence and stimulated emission of Nd3+ ions in Gd3Sc2Ga3O12crystals [J]. Phys. Status Solidi (a), 1976, 34: K109-K114. |
[2] | Caffey D P, Utano R A. Diode array side-pumped neodymium-doped gadolinium scandium gallium garnet rod and slab lasers [J]. App. Phys. Lett., 1990, 56(9): 808-810. |
[3] | Walter K. Solid-State Laser Engineering (固体激光工程) [M]. translated by Sun Wen, et al. Beijing: Science Press,2002, 49 (in Chinese). |
[4] | Stokowski S E, et al. Growth and characterization of large Nd, Cr:GSGG crystals for high-average-power slab lasers [J]. IEEE J. Quantum Electronics 1988, 24(6): 934-948. |
[5] | Yi Xianwu, Huang Chunhui, Wang Wei. Scandium and Rare Earths (钪稀土元素) [M]. Beijing: Science Press, 1992.14 (in Chinese). |
[6] | Brandle C D, Barns R L. Crystal stoichiometry and growth of rare-earth garnets contaning scandium [J]. J.Crystal Growth, 1973, 20: 1-5. |
[7] | Fratello V J, Brandle C D, Valentino A J. Growth of congruently melting gadolinium scandium garnet [J]. J.Crystal Growth, 1987, 80: 26-32. |
[8] | Chu Gang, Huang Jiliang, Chen Gang. Accurate Determination of lattice constant by extension function method of X-ray diffraction [J]. Computer and Applied Chemistry (计算机与应用化学), 1995, 12(1): 72-75 (in Chinese). |
[9] | Liu Daijun, Zhong Benhe, Zhan Yunxiang. Study on Crystal Structure with XRD [J]. Journal of Sichuan University (Engineering Science Edition) (四川大学学报 (工程科学版)), 2000, 32(2): 28-31 (in Chinese). |
[10] | Zhang Qingli. The Study on the preparation and luminescent properties of new-type heavy scintillators and red-emission phosphors [D]. Ph. D Thesis of the University of Science and Technology of China (中国科学技术大学博士学位论文), Hefei: 2000. (in Chinese). |
[11] | Yi Xianwu, Huang Chunhui, Wang Wei, et al. Scandium and Rare Earths (钪稀土元素) [M]. Beijing: Science Press,1992. 180 (in Chinese). |
[12] | Gu Xuemin,Gong Yisheng, Zang Xiwen, et al. Subgroups of Berillium, Alkaline earth, Boracium and Aluminium (铍碱土金属硼铝镓分族) [M]. Bejing: Science Press, 1990. 518 (in Chinese). |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%