Effect of Various Alkaline Oxides on Broadband Near-infrared Luminescence from Bismuth-Doped Muminophosphate Glasses

摘要

We reported effect of various alkaline oxides on the broadband infrared luminescence from bismuth-doped aluminophosphate glasses.The samples of (99-x)P_2O_5-17Al_2O_3-xR_2O-1Bi_2O_3 (R=Li,Na and K, x=0 and 10 in mol%) were prepared under reducing condition controlled by additional carbon powders.The fluorescent intensity decreased with increasing content of alkaline oxides and basicity of host glasses.The 1/e fluorescence lifetime of the 72P_2O_5-17Al_2O_3-10R_2O-1Bi_2O_3 (R=Li,Na and K) glasses decreased from 461 to 316μs,as alkaline ions changed from Li^+ to K^+.