Improved anti-Stokes energy transfer between rare earth ions in Er(0.5)Yb(9.5):FOV oxyfluoride vitroceramics explains the strong color reversal
Chen Xiao-Bo(陈晓波)a)†,Wang Ce(王策)a), Gregory J. Salamob), Naruhito Sawanoboric),Kang Dong-Guo(康栋国) d), Masaaki Ohtsukac), Yang Guo-Jian(杨国建)a)e), and Peng Fang-Lin(彭芳麟)a)e)
a Applied Optics Beijing Area Major Laboratory, Beijing Normal University, Beijing 100875, China; b University of Arkansas, Department of Physics, Fayetteville, AR 72701, USA; c Sumita Optical Glass, Inc., 4-7-25 Harigaya, Urawa, Saitama, 338, Japan; d Beijing Institute of Applied Physics and Computational Mathematics, Beijing 100088, Chinae Applied Optics Beijing Area Major Laboratory and Physics Department, Beijing Normal University, Beijing 100875, China
Abstract The widely used energy transfer theory is a foundation of luminescence, in which the rates of Stokes and anti-Stokes processes have the same calculation formula. An improvement on the anti-Stokes energy transfer to explain the fluorescence intensity reversal between the red and green fluorescence of Er(0.5)Yb(9.5):FOV is reported in the present article. The range of the intensity reversal $\varSigma$ was measured to be 877. Dynamic processes for 16 levels were simulated. A coefficient, the improvement factor of the intensity ratio of Stokes to anti-Stokes processes in quantum Raman theory compared to classical Raman theory, is introduced to successfully describe the anti-Stokes energy transfer. A new method to calculate the distance between the rare earth ions, which is critical for the energy transfer calculation, is proposed. The validity of these important improvements is also proved by experiment.
Received: 30 May 2009
Revised: 22 July 2009
Accepted manuscript online:
PACS:
78.55.Qr
(Amorphous materials; glasses and other disordered solids)
Fund: Project supported by the National
Natural Science Foundation of China (Grant No 10674019).
Cite this article:
Chen Xiao-Bo(陈晓波),Wang Ce(王策), Gregory J. Salamo, Naruhito Sawanobori,Kang Dong-Guo(康栋国), Masaaki Ohtsuka, Yang Guo-Jian(杨国建), and Peng Fang-Lin(彭芳麟) Improved anti-Stokes energy transfer between rare earth ions in Er(0.5)Yb(9.5):FOV oxyfluoride vitroceramics explains the strong color reversal 2009 Chin. Phys. B 18 5523
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