【作者】 梁海莲；

【导师】 杨魁胜；

【作者基本信息】 长春理工大学 ， 材料学， 2004， 硕士

【摘要】 本文采用熔融法制备了双掺Yb³⁺／Er³⁺氟氧锗酸盐玻璃、双掺Yb³⁺／Ho³⁺氟氧硅酸盐玻璃及双掺Yb³⁺，Ho³⁺氟氧硼酸盐上转换微晶玻璃。确定了三种玻璃的最佳配方，系统地探讨了三种上转换玻璃的制备工艺，确定了熔化温度及时间、退火温度及时间以及玻璃微晶化处理条件。 通过发射光谱、吸收光谱、透射光谱、拉曼光谱、TG-DTA、XRD和折射率等手段对上转换玻璃进行了表征，详细研究了不同泵浦功率与发光强度的关系；讨论了稀土离子的基态吸收、激发态吸收以及稀土离子之间的能量传递的关系，建立了相关的上转换机制模型。用980nm半导体激光器激发三种样品均得到了较强的发射峰值。更多还原

【Abstract】 The oxy-fluoride germanate glasses co-doped with Yb3+/Er3+, oxy-fluoride silicate glasses co-doped with Yb3+/Ho3+ and oxy-fluoride borate glass ceramics co-doped with Yb37Ho3+ were prepared. The optimum composition of three types of glasses was discussed, respectively. The melting temperature and time, annealing temperature and time and the micro-crystallization process were also discussed by investigating the preparation techanics of the three types of up-conversion glasses.The up-conversion glasses were characterized by emission spectra, absorption spectra, transimittance curve, Raman shift, TG-DTA curve, XRD, refracive index. The relationship between pumping power and relative intensity of green and red emissions was discussed. Ground state absorption, excitation state absorption and energy transfer were used in discusing the up-conversion mechanism of the glasses and the pertinent up-conversion mechnism models of the glasses were proposed. Strong green emission peaks were obtained when the three types of glasses were pumped by the 980nm laser.更多还原