| Original Articles |
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Luminescent Enhancement in Mg- and Er-Codoped LiNbO3 Crystals |
| TANG Li-Qin;ZHAO Li-Juan;ZHANG Xin-Zheng;YU Hua;MENG Jie;LIANG Qin;XU Jing-Jun;KONG Yong-Fa |
| Photonics Research Centre, College of Physical Science, Nankai University, Tianjin 300071
TEDA Applied Physics School, Nankai University, Tianjin 300457 |
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| Cite this article: |
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TANG Li-Qin, ZHAO Li-Juan, ZHANG Xin-Zheng et al 2005 Chin. Phys. Lett. 22 588-590 |
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Abstract We investigate the MgO codoping-induced effect on the luminescent properties of Er3+-doped and Er/Mg codoped LiNbO3 crystals. The emission and excitation spectra and the absorption spectra are measured. The results show that the luminescent behaviour of Er3+ ions is very sensitive to the codoping of Mg2+ ions. According to the photorefractive level theory, we propose a quench model for the Er/Mg codoped lithium niobate crystal. The quench centres are suggested to be the bipolaron (NbLi-NbNb), we attribute the luminescent enhancement to the decreasing concentration of these centres. The luminescent enhancement effect is successfully explained.
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| Keywords:
33.50.Dq
42.70.Nq
78.20.Ek
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Published: 01 March 2005
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| PACS: |
33.50.Dq
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(Fluorescence and phosphorescence spectra)
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42.70.Nq
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(Other nonlinear optical materials; photorefractive and semiconductor materials)
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78.20.Ek
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(Optical activity)
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