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