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http://cio.repositorioinstitucional.mx/jspui/handle/1002/532| Cooperative Luminescence and Absorption in Ytterbium-Doped Silica Fiber and the Fiber Nonlinear Transmission Coefficient at L=980nm with a Regard to the Ytterbium Ion-Pairs' Effect | |
| ALEXANDER KIRIYANOV YURY BARMENKOV | |
| Acceso Abierto | |
| Atribución-NoComercial-SinDerivadas | |
| An experimental and theoretical investigation of the nonlinear transmission coefficient in a set of Ytterbium-doped silica fibers (YFs) with various concentrations of Yb3+ ions at continuous-wave 980-nm pumping is reported. An analysis of the obtained experimental data shows that YF transmission coefficient is notably affected by the presence of Yb3+ - Yb3+ ion-pairs in the fibers, especially in heavily-doped ones. The last fact is confirmed by the study of the cooperative luminescence and absorption effects in the fibers, where a detailed inspection of their dependence on Yb3+ concentration is presented. The pairs’ effect is shown to seriously modify both the nonlinear character of YF transmission coefficient at λ = 980 nm and Yb3+ excited-state relaxation. A modeling of the experimental data is performed, which allows to find the coefficients addressing the pairs’ effect in each of YFs under study and, as a result, to fit the experimentally measured dependences of YF transmission coefficient on pump power, fiber length, and Yb3+ concentration. | |
| 01-05-2006 | |
| Artículo | |
| CIENCIAS FÍSICO MATEMÁTICAS Y CIENCIAS DE LA TIERRA | |
| Aparece en las colecciones: | Artículos arbitrados 2006 |
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