Determination Of Optimum Dopant Concentration For Maximum Fluorescent Output Using Tm3+:Yap And Tm3+:Tellurite Glass As Examples

Maximising fluorescent output of doped materials is a major goal of makers of opto-electronic materials. Often the manufacture of many samples of the doped material is expensive. A theory and mathematical formula are developed here whose purpose is to reduce the number of samples required for testing and accurately predicting the optimal concentration of dopant from results from the few samples tested. Data include fluorescent decay times obtained from pulsed excitation and the fluorescent emission intensity obtained from CW excitation. Even though the increase in fluorescent intensity per unit volume is negated at high doping concentrations by dopant-dopant quench effects, an optimal doping level can still be achieved which will give maximum fluorescent output per unit volume.