Improved anti-Stokes energy transfer between rare earth ions in Er（0.5）Yb（9.5）：FOV oxyfluoride vitroceramics explains the strong color reversal

• Published in: Chinese physics B 2009 (12), p.5523-5533
• Main Author: 陈晓波 王策 Gregory J.Salamo naruhito Sawanobori 康栋国 Masaaki Ohtsuka 杨国建 彭芳麟
• Format: Article
• Language: English
• Subjects: 反斯托克斯; 彩色反转片; 氟氧化物玻璃陶瓷; 稀土离子; 能量转移; 计算方法
• ISSN: 1674-1056; 2058-3834

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 Z 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.