中文摘要：

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1 265 nm和1 420 nm处的两个峰，1 420 nm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.

英文摘要：

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＋.