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Proceedings Paper

Red, green, and blue upconversion luminescence in ytterbium-sensitized praseodymium-doped lead-cadmium-germanate glass
Author(s): Artur S. Gouveia-Neto; Ernande B. da Costa; Luciano A. Bueno; Sidney J. L. Ribeiro
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Paper Abstract

Blue, green, red, and near-infrared upconversion luminescence in the wavelength region of 480 - 740 nm in Pr3+/Yb -codoped lead-cadmium-germanate glas under 980 nm diode laser excitation, is presented. Upconversion emission paks around 485, 530, 610, 645, and 725 nm which were ascribed to the 3P0 - 3HJ (J=4, 5, and 6), and 3P - 3FJ (J=2, and 3,4), transitions, respectively, were observed. The population of the praseodymium upper 3P0 emitting level was accomplished through a combination of ground-state absorption of Yb3+ ions at the 2F7/2, energy-transfer Yb3+(2F5/2) - Pr3+(3H4), and excited-state absorption of Pr3+ ions provoking the 1G4 - 3P0 transition. The dependence of the upconversion luminescence upon the Yb3+-concentration and diode laser power, is also examined, in order to subsidize the proposed upconversion excitation mechanism.

Paper Details

Date Published: 14 June 2004
PDF: 6 pages
Proc. SPIE 5350, Optical Components and Materials, (14 June 2004); doi: 10.1117/12.523988
Show Author Affiliations
Artur S. Gouveia-Neto, Univ. Federal Rural de Pernambuco (Brazil)
Ernande B. da Costa, Univ. Federal Rural de Pernambuco (Brazil)
Luciano A. Bueno, Univ. Estadual Paulista (Brazil)
Sidney J. L. Ribeiro, Univ. Estadual Paulista (Brazil)

Published in SPIE Proceedings Vol. 5350:
Optical Components and Materials
Michel J. F. Digonnet; Shibin Jiang, Editor(s)

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