| Original Articles |
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Red Up-Conversion Luminescence Process in Oxyfluoride Glass Ceramics Doped with Er3+/Yb3+ |
| YU Hua;ZHAO Li-Juan;LIANG Qin;MENG Jie;YU Xuan-Yi;TANG Bai-Quan;TANG Li-Qin;XU Jing-Jun |
| Photonics Center, College of Physics, Nankai University, Tianjin 300071
TEDA Applied Physics School, Nankai University, Tianjin 300457 |
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| Cite this article: |
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YU Hua, ZHAO Li-Juan, LIANG Qin et al 2005 Chin. Phys. Lett. 22 1500-1503 |
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Abstract The phonon-assisted quantum cutting (PQC) model is presumed to clarify the red up-conversion luminescence process in Er3+/Yb3+ co-doped glass ceramics by the excitation and emission spectra. The red up conversion luminescence of Er3+ ions mainly comes from three-photon absorption by the PQC process when the rare earth ions are doped in the glass ceramics and excited by 980nm pumped-laser. Er3+ ions absorb three-photons and relax to the 4+G11/2 state and then emit red up-conversion luminescence by the PQC process. The factor coefficient for the relation of pump-laser power and up-conversion intensity (P-I) is found by the analysis of excitation spectra of the red luminescence, which plays a major role to understand the true red up-conversion luminescence process. The new P-I relation is explained by the model of PQC.
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| Keywords:
73.43.Fj
74.25.Gz
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Published: 01 June 2005
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| PACS: |
73.43.Fj
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(Novel experimental methods; measurements)
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74.25.Gz
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(Optical properties)
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