Derivation of quantum yields for visible emission transitions of Sm in heavy metal tellurite glass

Under the pumping of violet lighting emitting diode, quantum yields for multichannel transition emissions have been determined in Sm³⁺-doped heavy metal tellurite glass for the first time. For the derivation, the necessary fluorescence spectra were measured and calibrated in an integrating sphere connected to a CCD detector with a 400 μm-core optical fiber. The spectral power distribution of the sample was derived from the measured spectra first, and then the quantum yields of the visible emissions of Sm³⁺ were calculated based on the distribution. The total quantum yield for four emission transitions of Sm³⁺ in visible region is 4.07%. Integrating sphere with a CCD detector is proven to be a reliable and reproducible method to characterize luminescence and laser materials.