No abstract

No abstract

No abstract

An optical quality silica glass doped with Er 3+ , Yb 3+ and Lu 3+ ions is synthesized by the sol-gel method. Virtually unavoidable clusterization of rare-earth elements that occurs upon introduction of lanthanide salts into a sol-gel system and leads to concentration quenching of luminescence of the glass is eliminated through the use of rare-earth phosphate complexes that are chemically bound to the SiO 2 network. This makes it possible to obtain a nearly molecular distribution of rare-earth elements in the glass matrix.

No abstract