Er3+ ion is such a kind of rare earth ions that has most splendid upconversion luminous phenomenon. It is very significant also to find some new mechanism, method and material to enhance the upconversion efficiency. This paper investigates the material and luminescence property of ErYb codoped oxyfluoride vitroceramics. In out experiment device, Optical Measurement could be proceeded very precisely, sensitively and nondestructively. Our research finds that oxyfluoride vitroceramics has good luminous property. The rare earth ions, which are within a same micro-crystallite, are easy to consist of couple-group. The intense cluster effects have emerged. It results in that the Er3+ ion's upconversion luminescence in oxyfluoride vitroceramics is ten times greater than that in oxyfluoride glass and ZBLAN fluoride glass.
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