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Infrared-to-visible upconversion luminescence of Er3+ and Yb3+ co-doped germanate glass

机译:Er3 +和Yb3 +共掺杂锗酸盐玻璃的红外到可见光上转换发光

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摘要

Frequency upconversion into green and red luminescence in Er3+ and Yb3+ co-doped germanate glass pumped with a 978 nm diode laser was presented. With increasing the excitation density, the green upconversion emission intensity was enhanced relative to the red one. Based on the emission spectra and the excitation density dependence of the upconversion emission intensity, we attributed the change of the upconversion emission spectra to the enhancement of three-photon excitation process to produce green luminescence with increasing the excitation density. The effects of this three-photon process on the 1.54 mum emission were also discussed. (C) 2004 Elsevier B.V. All rights reserved.
机译:提出了用978 nm二极管激光器泵浦的Er3 +和Yb3 +共掺杂锗酸盐玻璃中的频率上转换为绿色和红色发光。随着激发密度的增加,绿色的上转换发射强度相对于红色的增强。基于发射光谱和上转换发射强度的激发密度依赖性,我们将上转换发射光谱的变化归因于三光子激发过程的增强,从而随着激发密度的增加而产生绿色发光。还讨论了这种三光子过程对1.54mm发射的影响。 (C)2004 Elsevier B.V.保留所有权利。

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