Bright visible upconversion emission and thermally enhanced cooperative energy-transfer in Tb3+/Yb3+-codoped tellurite glass
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2003-12-01
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Gouveia-Neto, A. S.
Dos Santos, P. V.
Vermelho, M. V.D.
De Araujo, M. T.
Cassanjes, F. C. [UNESP]
Ribeiro, S. J.L. [UNESP]
Messaddeq, Y. [UNESP]
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In this work, bright visible upconversion emission excited through cooperative energy-transfer and thermal effects in Tb/sup 3+//Yb/sup 3+/-codoped 60TeO/sub 2/-10GeO/sub 2/-10K/sub 2/O-10Li/sub 2/O-10Nb/sub 2/O/sub 5/glasses excited at 1.064 μm is investigated. Bright upconversion luminescence around 485, 550, 590, 625 and 655 nm, identified as due to the /sup 5/D4/spl rarr//sup 7/F/sub J/(J= 6, 5, 4, 3, and 2) transitions of the terbium-ions, respectively, was generated. © 2003 IEEE.
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Conference on Lasers and Electro-Optics Europe - Technical Digest, p. 231-.