Abstract
The possibility of implementing photon cascade emission in CaF2-PrF3 crystals by increasing the PrF3 concentration in the CaF2 matrix is studied. It is shown that an increase in the Pr3+ content leads to redistribution of radiative transitions in favor of the 1S0-luminescence. The decrease in the efficiency of the second step of photon cascade emission at high PrF3 concentrations is caused by quenching of the 3P0 → 4f2 transitions as a result of cross relaxation.
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