Efficient blue upconversion emission due to confined radiative energy transfer in Tm 3+–Nd 3+ co-doped Ta 2O 5 waveguides under infrared-laser excitation
| Autor: | Lahoz, F., Shepherd, D.P., Wilkinson, J.S., Hassan, M.A. |
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| Zdroj: | In Optics Communications 2008 281(14):3691-3694 |
| Databáze: | ScienceDirect |
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