V^3＋：YAG晶体的生长、色心与光谱性能研究

CORC > 上海光学精密机械研究所 > 中国科学院上海光学精密机械研究所 > 激光与光电子功能材料研发中心

	V^3＋：YAG晶体的生长、色心与光谱性能研究; Crystal growth, color centers and spectra properties of V3+ : YAG grown by TGT
	苏良碧 ; 张丹 ; 李红军 ; 钱小波 ; 沈冏 ; 周国清 ; 徐军
刊名	物理学报
	2006
卷号	55 期号:11 页码:5987
关键词	V:YAG晶体 V : YAG crystal 四面体格位 tetrahedral sites 碳还原 carbon reduction 真空退火 vacuum annealing F心 F center
ISSN号	1000-3290
其他题名	Crystal growth, color centers and spectra properties of V3+ : YAG grown by TGT
中文摘要	采用石墨电阻加热的温梯法生长了V：YAG晶体，晶体的不同部位呈现两种不同的颜色：浅绿色和黄褐色．通过对比分析不同颜色V：YAG晶体的室温吸收光谱，推断出石墨发热体高温下扩散出来的C可以起到还原作用，提高晶体中V^3＋tetra离子的浓度，同时诱导了F心的形成．在1300℃下，对不同颜色的V：YAG晶体进行真空退火处理，发现处于八面体格位中的V^3＋离子在热激发作用下与近邻的四面体格位Al^3＋离子存在置换反应，由此产生一定浓度的四面体格位V^3＋离子．同时，F心在退火过程中被完全消除，释放出来的自由电子被; A V: YAG single crystal was grown by the temperature gradient technique (TGT) with graphite heating elements, which exhibited two kinds of colorations of light-green and yellow-brown in different parts. Differences in absorption spectra of three samples with different colors suggest that the reduction effect of carbon diffused from the heating element should enhance the concentration of tetrahedral V3+ ions and induce the F color centers with absorption band peaking at 370nm. The three samples all exhibited light-green color after annealing under vacuum at 1300 degrees C. From changes of their absorption spectra, it can be inferred that tetrahedral V3+ ions should be produced through the exchange of octahedral V3+ and tetrahedral Al3+ ions in neighboring sites under heat exciting. During the process of annealing, the F color centers were thoroughly eliminated and the escaped free electrons could be captured by V ions with higher valance states than + 3 to further improve the concentration of tetrahedral V3+ ions.
学科主题	光学材料;晶体
分类号	O773
收录类别	ei
语种	中文
公开日期	2009-09-24
内容类型	期刊论文
源URL	[http://ir.siom.ac.cn/handle/181231/5613]
专题	上海光学精密机械研究所_激光与光电子功能材料研发中心
推荐引用方式 GB/T 7714	苏良碧,张丹,李红军,等. V^3＋：YAG晶体的生长、色心与光谱性能研究, Crystal growth, color centers and spectra properties of V3+ : YAG grown by TGT[J]. 物理学报,2006,55(11):5987, 5990.
APA	苏良碧.,张丹.,李红军.,钱小波.,沈冏.,...&徐军.(2006).V^3＋：YAG晶体的生长、色心与光谱性能研究.物理学报,55(11),5987.
MLA	苏良碧,et al."V^3＋：YAG晶体的生长、色心与光谱性能研究".物理学报 55.11(2006):5987.