4 April 2005 Cross-relaxation energy transfer in Tm3+ doped tellurite glass
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A self-calibrating fluorescence spectroscopy technique was applied to study cross-relaxation 3H4, 3H63F4, 3F4, and energy migration 3H4, 3H63F4, 3F4, of the Tm3+ Ions doped in the tellurite glass. These glasses are investigated for their use in realization of 2 micron fiber lasers. Micro and macro-parameters of the energy transfer and migration were calculated by the means of the model of phonon-assistant multi-polar interaction and hoping mode. Steady rate equation analysis was used to fit the experimental fluorescence ratio of samples with different concentrations. We found that high-order (dipole-quadrupole) interaction was the dominant mechanism in the energy transfer of Thulium ions.
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Jianfeng Wu, Shibin Jiang, Tiequn Qiu, Michael Morrell, Axel Schulzgen, Nasser Peyghambarian, "Cross-relaxation energy transfer in Tm3+ doped tellurite glass", Proc. SPIE 5723, Optical Components and Materials II, (4 April 2005); doi: 10.1117/12.592289; https://doi.org/10.1117/12.592289

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