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The visible luminescence from Pr3+, Dy3+, Nd3+, Sm3+ and co-doped with Ho3+ and Dy3+ ions embedded in
Ga0.017Ge0.25As0.083S0.65 glass hosts at room temperature and at T10 K is reported, when pumping with an Ar+-ion laser
at lambda=488 nm. Fluorescence emissions at 1 .3 &mgr; was observed for Dy3+ and both at 1.3 and at 1.5 &mgr; for Pr3+ doped glasses with wavelength pumping at 950 nm. The emission bands correlate with the absorption bands characteristic for
the electronic transitions of the rare-earth ions. Energy transfer from Ho3+: 5F3 level to Dy3+:4F9/2 level increase the
visible emission efficiency at 650 nm in the co-doped glasses. The emission spectra correlate with the absorption
spectra of the investigated glasses. The investigated Ga0.017Ge0.25As0.083S0.65 glasses doped with Pr3+ are promising
materials for optical fibers amplifiers operating at 1300 and 1500 nm telecommunication windows. The effect of
oxygen on the absorption and luminescence spectra of Pr3+-doped Ga-La-S-O (GLS) glasses with a constant cationic
ratio Ga/La=O.7/O.3 and varying both oxygen (0.65 and 2.95 wt %) and praseodymium (0. 1 and 1 .0 wt %) content also
are presented.
M. S. Iovu,A. M. Andries,N. N. Syrbu,A. B. Seddon,D. Furniss,G. J. Adriaenssens, andYu. S. Tver'yanovich
"Absorption and photoluminescence of Ga-La-S:O and Ga-Ge-As-S glasses doped with rare-earth ions", Proc. SPIE 6635, Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies III, 663505 (31 May 2007); https://doi.org/10.1117/12.741858
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M. S. Iovu, A. M. Andries, N. N. Syrbu, A. B. Seddon, D. Furniss, G. J. Adriaenssens, Yu. S. Tver'yanovich, "Absorption and photoluminescence of Ga-La-S:O and Ga-Ge-As-S glasses doped with rare-earth ions," Proc. SPIE 6635, Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies III, 663505 (31 May 2007); https://doi.org/10.1117/12.741858