Abstract
Luminescence properties of Pr3+ ions in germanate glasses modified by BaF2 were investigated. Several luminescence bands originating to transitions from the 3P0 state to the lower-lying states of Pr3+ were registered under 450nm excitation. The spectral analysis suggests that the positions of luminescence bands and their relative intensities are changed significantly with BaF2 content. The relative integrated luminescence intensities of 3P0→3H4 transition (blue) to the 3P0→3F2 transition (red) of Pr3+ ions strongly depend on fluoride modifier BaF2 in glass composition. The luminescence bands of Pr3+ ions are shifted to shorter wavelengths with increasing BaF2 content.
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