Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 344, Issue 1-2, Pages 304-307Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/S0925-8388(02)00374-2
Keywords
luminescence; rare-earth; glass; thermal-effect; upconversion
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Upconversion luminescence and thermal effects in Pr3+/Yb3+- and Er3+/Yb3+-codoped 60TeO(2)-10GeO(2)-10K(2)O-10Li(2)O-10Nb(2)O(5) tellurite glasses excited by CW infrared radiation at 1.064 mum is reported. Generation of intense green and red fluorescence emission in Er3+/Yb3+-codoped samples and appreciable upconversion luminescence in the wavelength region of 450-680 nm in Pr3+/Yb3+-codoped samples is observed. Temperature-induced enhancement of X12 in the upconversion efficiency in Er3+/Yb3+- and X10 in the Pr3+/Yb3+-doped samples is demonstrated. (C) 2002 Elsevier Science B.V. All rights reserved.
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