Bi和Bi/Er共掺钙铝锗酸盐玻璃的超宽带红外发光(英文)  

Bi-doped and Bi/Er Co-doped Calcium Aluminum Germanate Glasses with Ultra-broadband Infrared Luminescence

作　　者：何禧佳[1,2] 周大成[1] 李臣[1] 陈明厚 魏生贤[2] 邱建备[1] 

机构地区：[1]昆明理工大学材料科学与工程学院,昆明650093 [2]曲靖师范学院物理与电子工程学院,云南曲靖655000

出　　处：《光子学报》2014年第3期48-52,共5页Acta Photonica Sinica

基　　金：The National Natural Science Foundation of China(Nos.51272097,61265004)

摘　　要：研究了铋掺杂以及铋铒共掺铝钙锗酸盐玻璃的超宽带红外发光性质.采用传统的熔融-退火方法获得所需玻璃.铋离子掺杂钙铝锗酸盐红外发光峰可以分为1 265nm和1 420nm处的两个峰,1 420nm处的峰强度较弱.X射线光电子能谱测试结果表明,玻璃中的铋离子以混合价态形式存在,三价的铋离子可能被还原为低价态铋离子.实验结果表明,铋离子红外发光源于低价态铋离子,可能源于一价Bi+;铒离子掺杂影响铋离子发光,随着铒离子浓度的增加,铋离子红外发光减弱,说明存在铋离子向铒离子的能量传递.Luminescence from Bi and Bi/Er doped aluminum calcium germanate glasses were investigated. The glasses were prepared by conventional melting-quenching technique. The near infrared luminescence of Bi-doped calcium aluminum germinate glasses can be divided into two Gaussian peaks which are located at 1 265 and 1 420 nm separately. The X-ray photoelectron spectroscopy spectrum indicates the valence state of Bi ions in the calcium aluminum germinate glasses is the mixed. Bi^3＋ ions could be reduced to low valence states bismuth ions. The experiments support the assumption that the near-infrared luminescence is connected with a low valence state of Bi, may be Bi^＋. Er^3＋ was introduced to adjust the 1420 nm band of Bi-related fluorescence. With the increment of Er^3＋ concentration, near-infrared fluorescence relative intensity of Bi ions is decreasing, which implies the energy transfer from Bi ions to Er^3＋.

关 键 词：近红外发光 光学碱度 能量传递 光放大器 吸收光谱 锗酸盐玻璃 

分 类 号：O433[机械工程—光学工程]