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Abstract
This paper reports the formation of a new series of Ho3+ -doped fluorophosphate optical glasses in the chemical formulae: 50 (NaPO3)6 + 18 BaF2 + 10 ZnF2 + 20 RF + 2 HoF3 where RF = LiF, NaF, KF, (LiF-NaF), (NaF-KF) and (KF-LiF). The physical properties, absorption and photoluminescene spectra have been measured to understand the optical behaviours of these Ho3+ -glasses as a function of the alkali content changes in the host glass matrices.