Abstract
A study of energy transfer in Tm—Ho and Tm—Nd systems in zinc phosphate glass is presented. The glass samples were prepared by fusing the ingredients at 1223 K for about half an hour in a crucible and then cooling to room temperature. Dopants were added as fractions of weight of the glass. From the measurements of fluorescence emission, energy transfer efficiencies and transfer probabilities have been calculated for both systems along with the average distance between donor and acceptor ions. Energy transfer interaction mechanisms for both systems are found to be mainly electric dipole—dipole in nature. Enhancement of TM 3+ emission with increasing temperature in the range 300 K to 440 K is observed and explained as suggested by Krupke.
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