Abstract
UV–visible upconversion emission from terbium in a Tb–Yb codoped tellurite glass has been observed on 980-nm excitation. The ultraviolet and violet upconversion emissions involve three photons and the blue, green, yellow, and red emissions arise due to two incident photons. The mechanism involved in these emissions is discussed. The effects of doping concentration and of the sample temperature on the upconversion emissions have also been studied.
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74.25.Gz; 42.70.Hj; 73.61.Jc; 76.30.Kg; 42.70.Ce
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Giri, N., Rai, D. & Rai, S. UV–visible emission in Tb–Yb codoped tellurite glass on 980-nm excitation. Appl. Phys. B 89, 345–348 (2007). https://doi.org/10.1007/s00340-007-2800-x
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DOI: https://doi.org/10.1007/s00340-007-2800-x