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In this letter the dynamics of the energy transfer (ET) process from amorphous silicon nanoclusters (Si-nc) to Er3+ ions is investigated in co-doped silica glasses. Using a double pulse setup the recovery time of the sensitizing effect is monitored and direct evidence is found for the occurrence of a fast (few hundreds ns) ET process in a sample containing large (2nm) aggregates, while a slower transfer time of few microseconds is revealed in a sample containing very small (
American Institute of Physics
Publication date: 
8 Aug 2005

M Falconieri, E Borsella, L De Dominicis, F Enrichi, G Franzò, F Priolo, F Iacona, F Gourbilleau, R Rizk

Biblio References: 
Volume: 87 Issue: 6 Pages: 061109
Applied Physics Letters