Patent ID: 7989376

Claim:
A fluorophosphate glass formed from a composition consisting of: a metaphosphate, Ba(PO 3 ) 2 , from 10 to 60 mol percent; a metaphosphate, Al(PO 3 ) 3 , from 10 to 60 mol percent; a fluoride, BaF 2 +RFx, wherein RFx is selected from the group consisting of CaF 2 , MgF 2 , PbF 2 , and BiF 3 , from 10 to 80 mol percent; and a dopant selected from a group consisting of: neodymium (Nd), erbium (Er), ytterbium (Yb), thulium (Tm), terbium (Tb), holmium (Ho), praseodymium (Pr), samarium (Sm), europium (Eu); an oxide of manganese (Mn); and mixtures thereof.