Up-conversion photoluminescence characteristics of Yb3+:Er3+:Tm3+ co-doped borosilicate glasses |
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Authors: | Li Cheng-Ren Xu Wei Dong Bin Li Shu-Feng Ding Jian-Hu Cheng Yu-Qi and Yin Hai-Tao |
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Institution: | College of Physics and Electronic Technology, Liaoning Normal
University, Dalian 116029, China; School of Physics and Optoelectronic Technology, Dalian University
of Technology, Dalian 116024, China; School of Science, Dalian Nationalities University, Dalian 116600,
China |
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Abstract: | Yb3+:Er3+:Tm3+co-doped borosilicate
glasses are prepared. Their strong up-conversion photoluminescence
spectra in a range from ultra-violet to near-infrared, which are
excited by a 978-nm laser diode, are measured, and the mechanisms of
energy transfer among Yb3+, Er3+ and Tm3+ ions
are discussed. The results show that there is an unexpected
wavelength at 900-nm emission from Yb3+ Stark splitting
levels to pump Tm3+ ions and there exists an optimum pump
power. The concentration of the Tm3+ dopant gives rise to a
prominent effect on the intensity of visible and near-infrared
emissions for the Yb3+:Er3+:Tm3+ co-doped
borosilicate glasses. |
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Keywords: | Er3+:Yb3+:Tm3+ co-doped borosilicate
glasses up-conversion emission two pump wavelengths optimum
pump power |
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