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Proceedings Paper

Infrared-to-visible upconversion fluorescence spectroscopy in trivalent rare-earth-doped lead-magnesium-fluorophosphate glass
Author(s): Luciano A. Bueno; Artur da S. Gouveia-Neto; Raphael Fonseca do Nascimento; Elias Arcanjo da Silva; Valberes B. do Nascimento; Ernande Barbosa da Costa
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Paper Abstract

There has recently been a great deal of interest in searching for new vitreous materials for application as hosts in infrared-to-visible light upconverters or optical amplifiers based upon rare-earth doped systems. Some of their many applications include: color displays, high density optical recording, biomedical diagnostics, infrared laser viewers and indicators, fiber lasers and amplifiers. Fluorophosphate-based glasses have recently emerged as auspicious candidates for such photonic devices applications. These glasses are advantageous because they present low nonlinear refractive indeces, better mechanical strength, chemical durability, and thermal stability than fluoride-based glasses and are suitable for developing low-loss, high strength, and low-cost optical fibers. It has recently been shown also that the fluorophosphate-based glass is an excellent candidate for high power lasers and broadband amplifiers in the eye-safe region around 1.5 μm for applications in communication, medicine, and meteorology. The present work involves the investigation of optical transitions and upconversion fluorescence spectroscopy of trivalent lanthanide ions Er3+ and Tm3+ codoped with Yb3+ in P2O5-PbO-MgF2 glass, excited with near-infrared diode lasers. The dependence of the upconversion luminescence upon the Yb3+-concentration and diode laser power, and the upconversion excitation mechanisms involved are also investigated. The viability of using these glasses as host for practical applications in optical temperature sensors will also be presented.

Paper Details

Date Published: 13 February 2008
PDF: 8 pages
Proc. SPIE 6875, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications VII, 68750Q (13 February 2008); doi: 10.1117/12.764865
Show Author Affiliations
Luciano A. Bueno, Univ. Federal Rural de Pernambuco (Brazil)
Artur da S. Gouveia-Neto, Univ. Federal Rural de Pernambuco (Brazil)
Raphael Fonseca do Nascimento, Univ. Federal Rural de Pernambuco (Brazil)
Elias Arcanjo da Silva, Univ. Federal Rural de Pernambuco (Brazil)
Valberes B. do Nascimento, Univ. Federal Rural de Pernambuco (Brazil)
Ernande Barbosa da Costa, Univ. Federal Rural de Pernambuco (Brazil)

Published in SPIE Proceedings Vol. 6875:
Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications VII
Peter E. Powers, Editor(s)

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