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Selected heavy metal glasses containing Yb3+ and Er3+ ions have been investigated. Near-infrared luminescence spectra
at 1.53 μm and up-conversion spectra of Er3+ were registered under excitation of Yb3+ by 975 nm diode laser line. The
luminescence bands correspond to 4I13/2 - 4I15/2 (NIR), 4S3/2 - 4I15/2 (green) and 4F9/2 - 4I15/2 (red) transitions of Er3+,
respectively. The optical transitions of rare earth ions have been examined as a function of glass host.
Łukasz Grobelny,Joanna Pisarska, andWojciech A. Pisarski
"Excitation energy transfer and optical transitions in heavy metal glasses doubly doped with Yb3+ and Er3+", Proc. SPIE 8010, Optical Fibers and Their Applications 2011, 80100O (10 June 2011); https://doi.org/10.1117/12.895930
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Łukasz Grobelny, Joanna Pisarska, Wojciech A. Pisarski, "Excitation energy transfer and optical transitions in heavy metal glasses doubly doped with Yb3+ and Er3+," Proc. SPIE 8010, Optical Fibers and Their Applications 2011, 80100O (10 June 2011); https://doi.org/10.1117/12.895930