Tm3 掺Li2O-CdO-Al2O3-SiO2玻璃的发光特性研究

通过高温熔融方法合成了Tm^3＋掺Li2O-CdO-Al2O3-SiO2（LCAS：Tm^3＋）氧化物理论，并对其高温热处理和淬火获得一种新型玻璃材料，测量和分析了该材料吸收、激发与发射光谱。高达95％以上近红外透过率表明，LCAS：Tm^3＋玻璃可作为近红外波段高透过率光学玻璃；远大于10^-18cm的积分发射截面、较高的荧光分支比与能形成粒子数反转的荧光寿命表明，LCAS：Tm^3＋玻璃可能成为一种新的激光功能材料。通过淬火获得样品，其发射光谱在400～680nm新生较强的大宽带，且随掺杂浓度的增加而发生蓝移，预示该材料可应用于光存储和全色显示领域，对此原因进行了分析与讨论。

Luminescent Properties of Tm3 Doped Li2O-CdO-Al2O3-SiO2 Glasses

The Tm~(3+) doped Li_2O-CdO-Al_2O_3-SiO_2(LCAS:Tm~(3+)) glasses were fabricated by the technique of high-temperature melting and its another glasses samples were obtained by high temperature treatment and quenching.Their absorption,excitation and emission spectra were measured and analyzed.The transmission ratio exceeded 95% in near-infrared range,so the LCAS:Tm~(3+) glasses can be used as high transmission optical glasses.The integral emission cross-sections outclassed 10~(-18) cm,the fluorescent ratios were higher and the radiative lifetimes were lenger,to the glasses are possible to be used as new laser function materials.The new strong and broad emissive bands for 400 nm to 680 nm emerge in the emission spectra of the another glasses samples.The emissive bands are shifted to blue with the Tm~(3+) concentration increasing in LCAS.The phenomenon indicates that the materials can be used in the optical memory and full-color display fields.The reasons for the luminescence phenomena were analyzed and discussed.