| Autor: |
Lahoz, F., Pérez-Rodríguez, C., Halder, A., Das, S., Paul, M. C., Pal, M., Bhadra, S. K., Vasconcelos, H. C. |
| Předmět: |
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| Zdroj: |
Journal of Applied Physics; Oct2011, Vol. 110 Issue 8, p083121, 6p |
| Abstrakt: |
An Yb3+ to Tm3+ energy-transfer quantum yield close to one has been found in phase-separated yttrium-alumina silicate optical fiber preform glasses. Optical absorption, luminescence, lifetime measurements, and rare-earth concentration dependence have been performed to investigate the feasibility of efficient blue upconversion fiber lasers through convenient Yb3+ sensitation. Luminescence decay measurements have demonstrated the co-existence of two phases. One of the phases is characterized by an yttrium-rich composition. Most of the RE ions partition into the yttrium-rich phase and produce the intense upconversion emission. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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