Energy transfer luminescence in (Eu 3+,Nd 3+) : tellurite glass

Abstract

Here, we bring out an infrared transmitting new optical glass based on TeO 2 added with AlF 3 and LiF, containing dual rare earth ions (Eu 3+,Nd 3+) as the dopants with a purpose to examine their luminescence and also the decay times pertaining to a prominent transition of Eu 3+ ( 5D 0 → 7F 2 at 615 nm) as a function of temperature both in the presence and absence of Nd 3+ ions. The energy transfer rates ( W tr), critical distances ( R 0) and transfer efficiencies (η tr) have been evaluated based on the measured lifetime data of this glass.