Frequency upconversion in Er3+-doped fluoroindate glasses pumped at 1.48 μm
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We 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.
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Physical Review B - Condensed Matter and Materials Physics, v. 55, n. 10, p. 6335-6342, 1997.
