摘要
采用固相反应方法制备了ErY共掺激光玻璃,其中Er3+浓度分别为0.5at%和1.0at%,所对应的Y3+浓度的变化范围分别为0.0at%—2.5at%和0.0at%—5.0at%.通过吸收光谱、瞬态和稳态光致发光光谱测量,研究了Y共掺对Er3+吸收截面、发射截面、荧光寿命和光致荧光特征的影响.研究结果表明:Y共掺杂导致1530nm附近的吸收峰宽化,对Er3+的吸收起到了一定的增强作用,并且这种宽化作用随着Er3+浓度的增加而更为显著.同时,Y共掺杂可以显著改善Er3+的荧光寿命.但是,在980nm激光抽运下,ErY共掺激光玻璃在1530nm处的光致荧光强度随Y的掺入增加并不十分显著.
0.5at% and 1.0at% Er/Y co-doped silicate glasses with different Y2 03 concentrations were fabricated by means of hightemperature solid-state reaction, with the Y concentration varying from 0.0at %-2.5at % and 0.0at %-5.0at %, respectively. By measuring the absorption spectra, the photoluminescence （PL） and PL decay, we studied the dependence of absorption and emission cross-section at 1530 nm and the lifetime and PL features on Y concentration. The results showed that Y co-doping enabled the absorption peak to widen and enhanced the absorption. The lifetime was prolonged considerably, especially for the highly Er-doped silicate glasses. However, considerable enhancement of PL intensity was not detected when the glasses were excited by a 980 nm laser.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2006年第8期4321-4326,共6页
Acta Physica Sinica
基金
国家自然科学基金(批准号:50240420656)资助的课题.~~
