[Spectroscopy parameters of Ho3+ in Ho3+ : FOG and Ho3+ : FOV].
In the present paper, the absorption spectra of Ho3+ (0.5 mol%)-doped oxyfluoride glass (FOG) sample and Ho3+ (0.5 mol%)-doped oxyfluoride vitroceramics (FOV) sample were measured through experiment. The authors calculated the intensity parameters omega 2, 4, 6 of the two materials according to J-O theory, and analyzed the possible reason for the difference between 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 YAlO3 and is similar 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 5I7 --> 5I8, 5F5 --> 5I8 etc., have a relatively large oscillator strengths(larger than 10(-6)) and large integrated emission cross sections(larger than 10(-18) 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.
Applied Optics Beijing Area Major Laboratory, Department of Physics, Analytical and Testing Center, Beijing Normal University, Beijing 100875, China. hzsdyxd@163.com
Xiao-Dong
XD
Yang
Ying
Y
Chen
Xiao-Bo
XB
Chen
N
N
Sawarobori
Shui-Feng
SF
Wang
Yong-Fen
YF
Zhou
Song
S
Li
Yi-Zhuang
YZ
Xu
Huan-Li
HL
Cheng
Guo-Jian
GJ
Yang