Maciel, G. S.Araújo, Cid B. deMessaddeq, Younes [UNESP]Aegerter, M. A.2014-05-272014-05-271997-03-01Physical Review B - Condensed Matter and Materials Physics, v. 55, n. 10, p. 6335-6342, 1997.0163-1829http://hdl.handle.net/11449/65051We report on efficient frequency upconversion in Er3+-doped fluoroindate glass. The process is observed under 1.48 μm laser diode excitation and results in fluorescence generation in the range from ultraviolet to near-infrared radiation. The study was performed for samples containing 1, 2, and 3 ErF3 mol % in the range of temperatures from 24 to 448 K. The upconverted signals were studied as a function of the laser intensity, and their dynamical behavior is described using a rate equation model which allows us to obtain the energy transfer rates between Er3+ ions in pairs and triads.6335-6342engArtigo10.1103/PhysRevB.55.6335Acesso aberto2-s2.0-00013666322-s2.0-0001366632.pdf2998503841917815