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14 June 2004 Red, green, and blue upconversion luminescence in ytterbium-sensitized praseodymium-doped lead-cadmium-germanate glass
Artur S. Gouveia-Neto, Ernande B. da Costa, Luciano A. Bueno, Sidney J. L. Ribeiro
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Proceedings Volume 5350, Optical Components and Materials; (2004) https://doi.org/10.1117/12.523988
Event: Integrated Optoelectronic Devices 2004, 2004, San Jose, CA, United States
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.
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Artur S. Gouveia-Neto, Ernande B. da Costa, Luciano A. Bueno, and Sidney J. L. Ribeiro "Red, green, and blue upconversion luminescence in ytterbium-sensitized praseodymium-doped lead-cadmium-germanate glass", Proc. SPIE 5350, Optical Components and Materials, (14 June 2004); https://doi.org/10.1117/12.523988
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KEYWORDS
Upconversion
Glasses
Ions
Absorption
Luminescence
Ytterbium
Praseodymium
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