Infrared-to-visible frequency upconversion in Pr3+/Yb3+- and Er3+/Yb3+-codoped tellurite glasses
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Data
2002-10-07
Autores
dos Santos, P. V.
Vermelho, MVD
Gouveia, E. A.
de Araujo, M. T.
Gouveia-Neto, A. S.
Cassanjes, F. C.
Ribeiro, SJL
Messaddeq, Younes [UNESP]
Título da Revista
ISSN da Revista
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Editor
Elsevier B.V.
Resumo
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 B.V. B.V. All rights reserved.
Descrição
Palavras-chave
luminescence, rare-earth, glass, thermal-effect, upconversion
Como citar
Journal of Alloys and Compounds. Lausanne: Elsevier B.V. Sa, v. 344, n. 1-2, p. 304-307, 2002.