Some Key Factors Affecting Energy Up-Conversion Efficiency of Rare-Earth Doped Oxy-Fluoride Materials

概要

論文の詳細を見る
In this study, Er^<3+>-Yb^<3+> co-doped oxy-fluoride glasses based on TeO_2 have been investigated. Some approaches to enhancing up-conversion efficiency are presented. Generally, hosts with low phonon energy are beneficial to energy up-conversion. It is found that when the quasi-field-strength parameter M^^- of the host is adjusted to approach that of the rare-earth dopant, the materials show high up-conversion efficiency. Selecting a suitable excitation photon energy to match the level of activated ions and/or sensitizing ions is a necessary condition for realizing high up-conversion efficiency. Our results offer some practical references for preparing rare-earth-doped energy up-conversion materials. [DOI: 10.1143/JJAP.41.670]
社団法人応用物理学会の論文
2002-02-15