Energy transfer up-conversion in Tm3+-doped silica fibre
Simpson, David Allan and Baxter, Gregory W and Collins, Stephen F and Gibbs, Keith and Blanc, Wilfried and Dussardier, Bernard and Monnom, Gerard (2006) Energy transfer up-conversion in Tm3+-doped silica fibre. Journal of Non-Crystalline Solids, 352 (2). pp. 136-141. ISSN 0022-3093Full text for this resource is not available from the Research Repository.
A study of the mechanisms responsible for the infra-red to near infra-red up-conversion in Tm3+-doped silica fibers is presented. Up-conversion luminescence was observed from the 3H4 level of Tm3+ under 1586 nm pumping into the 3F4 level. The quadratic dependence of the up-conversion luminescence at 800 nm on the 1800 nm luminescence from the 3F4 level confirms that the 3H4 level is populated by a two photon process. Two possible processes are proposed as mechanisms responsible for the up-conversion: excited state absorption and energy transfer up-conversion. The decay characteristics of the luminescence from the 3H4 level were studied under direct and indirect pumping at 786 and 1586 nm, respectively. By comparing the decay waveforms to the solution of a simple set of rate equations, the energy transfer up-conversion process (3F4, 3F4 → 3H4, 3H6) was established at Tm2O3 concentrations greater than 200 ppm.
|Uncontrolled Keywords:||ResPubID: 11754, optical fibers, optical spectroscopy, absorption, luminescence, up-conversion, time resolved measurements, alumino-silicates, silica, rare-earths in glasses|
|Subjects:||Faculty/School/Research Centre/Department > School of Engineering and Science
FOR Classification > 0299 Other Physical Sciences
|Date Deposited:||07 Dec 2009 22:45|
|Last Modified:||11 Jul 2011 05:27|
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|Citations in Scopus:||14 - View on Scopus|
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