The indirect upconversion-sensitization luminescence research of Tm, Yb codoped oxyfluoride glasses

In this paper we study the indirect upconversion-sensitization luminescence of Tm (0.1) Yb (10.9) : oxyfluoride glass induced by 800nm diode laser. Th rough the comparison between:Tm (0.1)Yb(10.9): oxyfluoride and Tm(0.1)Yb(3) : ZBLAN glasses we found that the upconversion luminescence intensity of T m(0.1)Yb( 10.9) : oxyfluoride glass was greatly enhanced and exceeded the l evel of Tm(0.1)Yb(3) : ZBLAN glass under the condition of indirect upconver sion-sensitization. The results illustrated that under this kind of upconve rsion mechanism, it is possible to find some kind of material which has hig her rarer earth doped concentration and cut-off phonon energy, thus showing much higher upconversion efficiency than ZBLAN. This work and the results obtained win be helpful to promote the upconversion research to practical a pplication. To our best knowledge, there have not been similar works publis hed domestically and a broad.