Spatiotemporal modeling of mid-infrared photoluminescence from terbium（Ⅲ） ion doped chalcogenide-selenide multimode fibers
来源期刊：Journal of Rare Earths2019年第11期
论文作者：Slawomir Sujecki Lukasz Sojka Zhuoqi Tang Dinuka Jayasuriya David Furniss Emma Barney Trevor Benson Angela Seddon
文章页码：1157 - 1163
摘 要：A numerical model was developed to study the time dynamics of photo luminescence emitted by Tb3+ doped multimode chalcogenide-selenide glass fibers pumped by laser light at approximately 2 μm.The model consists of a set of partial differential equations（PDEs）,which describe the temporal and spatial evolution of the photon density and level populations within the fiber.In order to solve numerically the PDEs a method of lines was applied.The modeling parameters were extracted from measurements and from data available in the literature.The numerical results obtained support experimental observations.In particular,the developed model reproduces the discrepancies that are observed between the photoluminescence decay curves obtained from different points along the fiber.The numerical analysis was also used to explain the source of these discrepancies.
Slawomir Sujecki1,2，Lukasz Sojka1，Zhuoqi Tang2，Dinuka Jayasuriya2，David Furniss2，Emma Barney2，Trevor Benson2，Angela Seddon2
1. Telecommunications and Teleinformatics Department,Wroclaw University of Science and Technology2. Mid-Infrared Photonics Group,George Green Institute for Electromagnetics Research,Faculty of Engineering,The University of Nottingham
摘 要：A numerical model was developed to study the time dynamics of photo luminescence emitted by Tb3+ doped multimode chalcogenide-selenide glass fibers pumped by laser light at approximately 2 μm.The model consists of a set of partial differential equations（PDEs）,which describe the temporal and spatial evolution of the photon density and level populations within the fiber.In order to solve numerically the PDEs a method of lines was applied.The modeling parameters were extracted from measurements and from data available in the literature.The numerical results obtained support experimental observations.In particular,the developed model reproduces the discrepancies that are observed between the photoluminescence decay curves obtained from different points along the fiber.The numerical analysis was also used to explain the source of these discrepancies.
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