Absolute quantum cutting efficiency of Tb3+-Yb3+ co-doped glass

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[1] Duan, Qianqian
[2] 1,Qin, Feng
[3] Zhao, Hua
[4] 1,Zhang, Zhiguo
[5] 1,2,Cao, Wenwu
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| 1600年 / American Institute of Physics Inc.卷 / 114期
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The absolute quantum cutting efficiency of Tb3+-Yb3+ co-doped glass was quantitatively measured by an integrating sphere detection system; which is independent of the excitation power. As the Yb3+ concentration increases; the near infrared quantum efficiency exhibited an exponential growth with an upper limit of 13.5%; but the visible light efficiency was reduced rapidly. As a result; the total quantum efficiency monotonically decreases rather than increases as theory predicted. In fact; the absolute quantum efficiency was far less than the theoretical value due to the low radiative efficiency of Tb3+ (3+ ions. © 2013 AIP Publishing LLC;
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