1.5 mu m emission and infrared-to-visible frequency upconversion in Er+3/Yb+3-doped phosphoniobate glasses
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
20/05/2014
20/05/2014
15/09/2006
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Resumo |
Sodium phosphoniobate glasses with the composition (mol%) 75NaPO(3)-25Nb(2)O(5) and containing 2 mol% Yb3+ and x mol% Er3+ (0.01 <= x <= 2) were prepared using the conventional melting/casting process. Er3+ emission at 1.5 mu m and infrared-to-visible upconversion emission, upon excitation at 976 nm, are evaluated as a function of the Er3+ concentration. For the lowest Er3+ content, 1.5 mu m emission quantum efficiency was 90%. Increasing the Er3+ concentration up to 2 mol%, the emission quantum efficiency was observed to decrease to 37% due to concentration quenching. The green and red upconversion emission intensity ratio was studied as a function of Yb3+ co-doping and the Er3+-Er3+ energy transfer processes. (c) 2006 Elsevier B.V. All rights reserved. |
Formato |
3636-3641 |
Identificador |
http://dx.doi.org/10.1016/j.jnoncrysol.2006.03.095 Journal of Non-crystalline Solids. Amsterdam: Elsevier B.V., v. 352, n. 32-35, p. 3636-3641, 2006. 0022-3093 http://hdl.handle.net/11449/36246 10.1016/j.jnoncrysol.2006.03.095 WOS:000240706000047 |
Idioma(s) |
eng |
Publicador |
Elsevier B.V. |
Relação |
Journal of Non-Crystalline Solids |
Direitos |
closedAccess |
Palavras-Chave | #glasses #laser-matter interactions #optical spectroscopy #absorption #luminescence #upconversion #phosphates #rare-earths in glasses |
Tipo |
info:eu-repo/semantics/article |