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首页> 外文期刊>Optical Engineering >Frequency upconversion luminescence in Yb3+-sensitized Er3+- and Pr3+-codoped PbGeO3: PbF2:xF(2) (x = Mg, Ba) glass
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Frequency upconversion luminescence in Yb3+-sensitized Er3+- and Pr3+-codoped PbGeO3: PbF2:xF(2) (x = Mg, Ba) glass

机译：Yb3+敏化Er3+和Pr3+共掺杂PbGeO3的频率上转换发光：PbF2：xF（2） （x = Mg， Ba）玻璃

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摘要

The optical properties and energy-transfer upconversion luminescence of Er3+- and Pr3+/Yb(3+)codoped PbGeO3-PbF2-xF(2) (x = 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 H-2(11/2) -> I-4(15/2), S-4(3/2) -> I-4(15/2) e F-4(9/2) -> I-4(15/2), respectively, was readily observed. In the Pr3+/Yb3+-codoped system, emission peaks around 485, 530, 610, and 645, which were ascribed to the P-3(0) - H-3(J) (J = 4,5,6) and P-3(0) - F-3(J) (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 F-2(7/2), energy-transfer Yb3+(F-2(5/2))-Pr3+(H-3(4)),and excited-state absorption of Pr3+ ions provoking the (1)G(4) - P-3(0) transition. The dependence of the upconversion emission on glass composition, pump power, and doping contents was also examined. Glassy and glass-ceramic samples were compared in order to determine the system with better luminescence efficiency. (C) 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)

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