Dy3+ ion doped different fluorophosphate glasses were prepared by melt-quenching process. Structural study was conducted by XRD, FTIR, FT-Raman and 31P MAS NMR spectroscopy. The optical properties were examined using absorption and photoluminescence spectroscopy. Various structural groups that made up the glass were identified using FTIR and FT-Raman spectra. Breaking up of metaphosphate chains were detected by the decrease of Q2 tetrahedral sites paving the formation of pyrophosphate groups (Q1) as revealed by 31P MAS NMR spectroscopic study. Judd-Ofelt intensity parameters Ω2, Ω4, and Ω6, were calculated from absorption spectra. Radiative lifetimes (τR), branching ratios (βR) integrated absorption cross-sections(Σ)and were calculated subsequently using the above said technique. Experimental branching ratios (βexp) and stimulated emission cross-sections (σP) were calculated for all the observed emission transitions of Dy3+doped prepared fluorophosphate glasses. The CIE chromaticity co-ordinates, correlated colour temperature (CCT) and yellow to blue (Y/B) intensity ratios were calculated to ascertain these glasses usefulness for photonic applications in lasers and white LEDs..
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