Ho^(3＋)：FOG与Ho^(3＋)：FOV的光谱学参量计算  

Spectroscopy Parameters of Ho^(3+) in Ho^(3+):FOG and Ho^(3+):FOV

作　　者：杨晓冬[1] 陈英[1] 陈晓波[1] Sawarobori N 王水峰[1] 周永芬[3] 李崧[1] 徐怡庄[3] 程欢利[1] 杨国建[1] 

机构地区：[1]北京师范大学物理系分析测试中心应用光学北京重点实验室,北京100875 [2]Sumita Optical Glass,Inc.,4-7-25 Harigaya,Urawa,Saitama 338,Japan [3]北京大学化学与分子工程学院,北京100871

出　　处：《光谱学与光谱分析》2013年第7期1734-1738,共5页Spectroscopy and Spectral Analysis

基　　金：中央高校基本科研业务费专项资金项目(212-105560GK);国家自然科学基金项目(10674019)资助

摘　　要：通过实验分别测得了掺杂Ho3+(0.5mol%)的氟氧化物玻璃(FOG)样品和掺杂Ho3+(0.5mol%)的氟氧化物玻璃陶瓷(FOV)样品的吸收光谱,根据Jubb-Ofelt理论拟合出两种材料强度三参量Ω2,4,6,并且分析了两种材料在强度参量上产生差异的可能原因。再由拟合得到的强度参量值计算出了各激发态之间的振子强度,自发辐射跃迁速率,荧光分支比和积分发射截面等光谱学参量,并且对两种材料的各参量进行了对比分析,Ho3+在FOV和在FOG中的振子强度相差不多,与在YAlO3中大致相同,比在钛酸铝氟化物玻璃(lead borale titanale aluminium fluoride,LBTAF)中稍强,比在LaF3和锆系氟化物玻璃(ZrF4-BaF2-LaF3-AlF3-NaF,ZBLAN)更强。通过分析计算得到的光谱学参量,可以发现有些跃迁,特别是5I 7→5I 8,5 F5→5I 8等,具有比较大的振子强度(大于10-6)和积分发射截面(大于10-18 cm),具备形成激光通道的条件,因此值得关注。总结了几个强发光能级在不同领域的应用前景。n the present paper, the absorption spectra of Ho3＋ （0. 5 mol%）-doped oxyfluoride glass （FOG） sample and Ho3＋ （0. 5 mol%）-doped o xyfluoride vitroceramics （FOV） sample were measured through experiment. The authors calculated the in- tensity parameters [2z, 4, 6 of the two materials according to J-O theory, and analyzed the possible reason for the difference be- tween the two materials on the intensity parameters. After that the authors calculated oscillator strength, spontaneous radiative transition rate, branching ratio and integrated emission cross section and some other spectroscopic parameters of several excited states and then made a comparative analysis of the two materials based on these spectroscopic parameters. The authors found that the oscillator strength of trivalent holmium iron in FOV is about the same with the oscillator strength in YA103 and is simi- lar to oscillator strength in FOG, while slightly larger than in that LBTAF and much larger than that in LaF3 and ZBLAN. By analyzing the calculated spectroscopic parameters, it can be found that some transitions, especially s I7---~518, 5Fs ___~s I8 etc. , have a relatively large oscillator strengths（larger than 10-G） and large integrated emission cross sections（larger than 10-~8 cm）. These transitions have the conditions to form laser passages, so they are worth a lot of attention. At last, application prospects of several strong luminescence transitions were concluded.

关 键 词：Ho3+ 氟氧化物玻璃 氟氧化物玻璃陶瓷 J-O理论 光谱学参量 量子剪裁 

分 类 号：O433.1[机械工程—光学工程]