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Proceedings Paper

Optical properties and upconversion emission in Yb3+-sensitized Er3+- and Pr3+-codoped PbGeO3:PbF2:xF2 (x = Mg, Ba) glass
Author(s): Alexandre O. Silva; A. S. Gouveia-Neto; Luciano A. Bueno; Carlos E. N. Oliveira
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Paper Abstract

In this report the optical properties and energy-transfer upconversion luminescence of Er3+- and Pr3+/Yb3+-codoped PbGeO3-PbF2-xF2(Mg, Ba) glass and glass-ceramic under infrared excitation at 975 nm is investigated. In Er3+/Yb3+- codoped samples, green(525, and 550 nm), and red(662 nm) luminescence corresponding to the 2H11/24I15/2, 4S3/24I15/2 e 4F9/24I15/2, respectively, was readily observed. In the Pr3+/Yb3+ co-doped system, emission peaks around 485, 530, 610, and 645 which were ascribed to the 3P0 - 3HJ (J=4,5,6), and 3P03FJ (J=2,3,4), transitions, respectively, were observed. The population of the praseodymium 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 1G43P0 transition. The dependence of the upconversion emission on glass composition, pump power, and doping contents was also examined. Glassy and glass-ceramic samples was compared in order determine the system with better luminescence efficiency.

Paper Details

Date Published: 16 March 2016
PDF: 7 pages
Proc. SPIE 9726, Solid State Lasers XXV: Technology and Devices, 97261L (16 March 2016); doi: 10.1117/12.2207235
Show Author Affiliations
Alexandre O. Silva, Univ. Federal Rural de Pernambuco (Brazil)
A. S. Gouveia-Neto, Univ. Federal de Alagoas (Brazil)
Luciano A. Bueno, Univ. de Sorocaba (Brazil)
Carlos E. N. Oliveira, Univ. Federal Rural de Pernambuco (Brazil)

Published in SPIE Proceedings Vol. 9726:
Solid State Lasers XXV: Technology and Devices
W. Andrew Clarkson; Ramesh K. Shori, Editor(s)

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