【作者】 杨钢锋； 邓再德； 印冰； 冯洲明； 张伟南； 姜中宏；

【Author】 Yang Gangfeng;Deng Zaide;Yin Bing;Feng Zhouming;Zhang Weinan;Jiang Zhonghong Institute of Optical Communication Materials, South China University of Technology, Guangzhou, 510641 Shanghai Institute of Optics and Fine Mechanics,Academia Sinica,P.O. Box 800-216, Shanghai, 201800

【机构】 华南理工大学材料学院光通信材料研究所；

【摘要】 以72P₂O₅-8Al₂O₃-20R₂O（R-Li、Na、K）和（77-x）P₂O₅-8Al₂O₃-（15+x）Na₂O（x=0,5,10,15,20）掺铒磷酸盐玻璃系统为研究对象,测量和计算了掺铒磷酸盐玻璃的各种光谱参数,探讨了不同网络修饰体及其含量对掺铒磷酸盐玻璃光谱性质的影响.结果表明,玻璃折射率n_d、积分吸收截面∑_abs、峰值发射截面σ_emi、J-O强度参数Ω_t以及自发辐射几率A_R都有较强的成分依赖性,主要决定于Er³⁺离子周围结构和Er-O键共价性的变化;减小Er-O键的共价性可得到较高的∑_abs、σ_emi以及A_R.更多还原

【Abstract】 Various spectroscopic parameters of the erbium-doped phosphate glasses（72P₂O₅-8Al₂O₃-20R₂O （R=Li, Na, K）and （77-x）P₂O₅-8Al₂O₃-（15+x）Na₂O,x=0, 5, 10, 15, 20） were measured or calculated. And the influences of R₂O andits content on spectroscopic properties of erbium-doped phosphate glasses were discussed. It was found that someparameters, such as refractive index n_d, integrated absorption cross section ∑_abs, peak emission cross section σ_emi,J-O parameters Ω₁ and spontaneous emission probability A_R, are all depended on the glass composition. Thoseare due to the changes of structure around the erbium ions and/or the covalency of the erbium ion sites. The ∑_abs,σ_emi and A_R can be increased with lowering the covalency between erbium and oxygen ions.更多还原