Tm^(3+)离子掺杂Ge-Ga-S-CsI硫卤玻璃近红外及中红外发光特性研究  

Near- and Mid-Infrared Spectroscopic Properties of Tm^(3+)-Doped Ge-Ga-S-CsI Glasses

作　　者：张鹏君[1] 戴世勋[1,2] 彭波[2] 徐铁峰[1] 聂秋华[1] 章向华[1,3] 王训四[1] 

机构地区：[1]宁波大学信息科学与工程学院,浙江宁波315211 [2]中国科学院西安光学精密机械研究所瞬态光学与光子技术国家重点实验室,陕西西安710119 [3]法国雷恩大学玻璃与陶瓷国家实验室,雷恩法国35042

出　　处：《中国激光》2010年第2期554-559,共6页Chinese Journal of Lasers

基　　金：国家自然科学基金(60878042);中国博士后基金(20080430204);浙江省自然科学基金(Y407253);中国科学院王宽诚博士后工作奖励基金;宁波大学王宽诚幸福基金资助项目

摘　　要：用熔融急冷法制备了系列不同Tm^(3+)离子掺杂浓度的Ge-Ga-S-CsI硫卤玻璃,测试了样品折射率、吸收光谱以及800 nm激光抽运下的近红外及中红外波段荧光光谱特性。用Judd-Ofelt理论计算分析了Tm^(3+)离子在Ge-Ga-S-CsI硫卤玻璃中的强度参数Ω_i(i=2,4,6),自发辐射跃迁几率A,荧光分支比β和辐射寿命r_(rad)等光谱参数。讨论了800 nm激光抽运下的样品近红外及中红外荧光特性与Tm^(3+)离子掺杂浓度之间的关系,并用McCumber(MC)理论和Futchbauer-Ladenburg(FL)公式分别计算了1.8μm和3.8μm处的受激发射截面。Tm^3＋ -doped chalcogenide glasses in Ge-Ga-S-CsI system were prepared and the properties of glasses including density, absorption spectrum, emission spectra and fluorescence life in the near- and mid-infrared spectral region under 800 nm excitation were measured. The optical parameters such as intensity parameter Ωi （ i = 2,4,6）, predicted spontaneous A, radiative transition rate fl and lifetime rnd of Tm^3＋ in Ge-Ga-S-CsI glasses and so on by means of Judd-Ofelt theory according to absorption spectrum were calculated. The fluorescence spectra were investigated with the different Tm^3＋ ion concentration under 800 nm excitation. Also, the emission cross-section at 1.8 μm and 3.8 μm was found using the theory of McCumber and the Futchbauer- Ladenburg equation respectively.

关 键 词：材料 中红外发光 硫系玻璃 稀土掺杂 铥离子 

分 类 号：TQ171.112[化学工程—玻璃工业]