摘要：Fluoroindate glasses co-doped with Pr3 /Er3 ions were synthesized and their near-infrared luminescence properties have been examined under selective excitation wavelengths. For the Pr3 /Er3 co-doped glass samples several radiative and nonradiative relaxation channels and their mechanisms are proposed under direct excitation of Pr3 and/or Er3 . The energy transfer processes between Pr3 and Er3 ions in fluoroindate glasses were identified. In particular, broadband near-infrared luminescence (FWHM = 278 nm) associated to the 1G4 → 3H5 (Pr3 ), 1D2 → 1G4 (Pr3 ) and 4I13/2 → 4I15/2 (Er3 ) transitions of rare earth ions in fluoroindate glass is successfully observed under direct excitation at 483 nm. Near-infrared luminescence spectra and their decays for glass samples co-doped with Pr3 /Er3 are compared to the experimental results obtained for fluoroindate glasses singly doped with rare earth ions.
其他摘要：Abstract Fluoroindate glasses co-doped with Pr 3 /Er 3 ions were synthesized and their near-infrared luminescence properties have been examined under selective excitation wavelengths. For the Pr 3 /Er 3 co-doped glass samples several radiative and nonradiative relaxation channels and their mechanisms are proposed under direct excitation of Pr 3 and/or Er 3 . The energy transfer processes between Pr 3 and Er 3 ions in fluoroindate glasses were identified. In particular, broadband near-infrared luminescence (FWHM = 278 nm) associated to the 1 G 4 → 3 H 5 (Pr 3 ), 1 D 2 → 1 G 4 (Pr 3 ) and 4 I 13/2 → 4 I 15/2 (Er 3 ) transitions of rare earth ions in fluoroindate glass is successfully observed under direct excitation at 483 nm. Near-infrared luminescence spectra and their decays for glass samples co-doped with Pr 3 /Er 3 are compared to the experimental results obtained for fluoroindate glasses singly doped with rare earth ions.
