Tb3+/Yb3+ heavily-doped tellurite glasses with efficient green light emission

Without introducing concentration quenching phenomenon, a few wt% of Tb3+ and Yb3+ ions were doped into a group of easily-fiberized tellurite glasses characterized by loose polyhedron structures and rich interstitial positions. Intense green upconversion emission from Tb3+ ions centered at 539 nm due to transition 5D4→7F5 was observed by direct excitation of Yb3+ ions with a laser diode at 976 nm. Optimizing the concentration ratio of Tb3+/Yb3+, a tellurite glass with composition of 80TeO2-10ZnO-10Na2O (mol%)+1.0wt% Tb2O3+3.0wt% Yb2O3 was found to present the highest green light intensity and therefore is especially suitable for efficient green fiber laser development.

Without introducing concentration quenching phenomenon a few wt % of Tb3+ and Yb3+ ions were doped into a group of easily-fiberized tellunte glasses characterized by loose polyhedron structures and rich interstitial positions Intense green upconversion emission from Tb3+ ions centered at 539 nm due to transition D-5(4) -> F-7(5) was observed by direct excitation of Yb3+ ions with a laser diode at 976 nm Optimizing the concentration ratio of Tb3+/Yb3+ a tellunte glass with a composition of 80TeO(2)-10ZnO-10Na(2)O (mol%) + 1 0 wt % Tb2O3 + 3 0 wt % Yb2O3 was found to present the highest green light intensity and therefore is especially suitable for efficient green fiber laser development (C) 2010 Elsevier BV All rights reserved

This work was performed in Xi’an Institute of Optics and Precision Mechanics (XIOPM), Chinese Academy of Sciences (CAS), and funded by grants No. 60907039, 60807034 and 10874239 from the National Natural Science Foundation of China (NSFC) and by the West Light Foundation and the “Hundreds of Talents Programs” from the Chinese Academy of Sciences (CAS). Aoxiang Lin and Jean Toulouse’s research work in USA is being funded by a grant from the National Science Foundation (NSF), No. DMR-0701526.