In this Letter, we reported on an interesting multiphoton infrared quantum cutting phenomenon in -doped oxyfluoride vitroceramics phosphors. From the study results it is found that the absorption of one 288.0 nm photon of the matrix results in the emission of two 975.5 nm photons of the ion. In addition, it is found also that one 255.0 nm photon of the matrix may result in the emission of three 975.5 nm photons of the ion, due to the fact that their cooperative energy transfer rate is larger than multiphonon nonradiative relaxation rate.
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