摘要
采用高温熔融法制备了一种新的Yb^3＋掺杂氟磷玻璃（AFG），测量了该玻璃的折射率nd（1．5705）及Yb^3＋离子0v5龙能级的荧光寿命rf（1．80ms），测试了它的吸收光谱、荧光光谱及析晶稳定性能，应用倒易法计算了Yb3’的受激发射截面可达0．928pm^2，增益系数可达1．6704pm^2·ms。得到了较为理想的激光性能参数：激发态最小粒子数为0．1941，饱和抽运强度为6．1975kW／cm^2，最小抽运强度为1．2029kW／cm^2。研究结果表明该AFG玻璃的部分光谱激光性能优于其他Yb^3＋掺杂基质玻璃，是实现超短脉冲激光输出的优良基质材料。
A new kind of Yb^3＋ -doped fluorophosphate glass（AFG） is prepared at high temperature, the refractive index of the glass（ nd = 1. 570 5） and the lifetime of ^2F5/2 （ rf = 1.80 ms） are measured, also we tested the absorption spectrum,fluorescence spectrum and the crystallization stability, the emission cross section （0. 928 pm2） of Yb^3＋ is calculated based on reciprocity theory, and the gain coefficient is estimated to be 1. 670 4 pm^2 ·ms. The laser properties of Yb^3＋in AFG glass is well evaluated： excited state minimum populations is 0. 194 1, pump saturation intensity is 6. 197 5 kw/cm^2, minimum pump intensity is 1. 202 9 kw/cm^2. It is found that some spectroscopic and lasing properties of AFG glass are better than other Yb^3＋-doped glasses, and it is a good candidate for ultra short pulses.
出处
《武汉理工大学学报》
CAS
CSCD
北大核心
2007年第E01期319-322,共4页
Journal of Wuhan University of Technology
基金
国家自然科学基金（60508014和50502030）,浙江省自然科学基金青年人才培养项目（R406007）,浙江省科技计划重点项目（2007C21123）和浙江省教育厅重点理目（20050359）资助.
关键词
氟磷玻璃
Yb^3+离子
光谱性能
激光性能
fluorophosphate glass
Yb^3＋-doped
spectroscopic properties
lasing properties
